{"title":"Cal-Mag Supplements","description":"\u003cp\u003eCalcium and magnesium supplements for coco, hydroponic and soil gardens. Brands include Botanicare, Emerald Harvest, Roots Organics, Cutting Edge, FoxFarm, Flying Skull and House \u0026amp; Garden, in sizes from 1-quart bottles to bulk jugs.\u003c\/p\u003e","products":[{"product_id":"advanced-sensi-cal-mag-xtra-4l","title":"Advanced Sensi Cal-Mag Xtra - 4L","description":"\u003cp\u003eSENSI CAL-MAG XTRA\u003cbr\u003eFeed Your Crops the Extra Calcium, Magnesium, and Iron They Need If You Use a Non-Advanced Base Nutrient\u003c\/p\u003e\u003cp\u003ePlants  just like all forms of life, including human beings require a complete range of essential elements in order to thrive. Not one can be lacking, or your crops may suffer nutrient deficiencies. Of course, different concentrations of different nutrients are required by plants and animals at different stages of their lives. Just like young, developing children need vitamins and minerals, your plants need a steady supply of calcium and magnesium to ensure vigorous, healthy growth. But even expert growers often overlook another crucial element for high-value crops: specific forms of iron in precise ratios. If you're using our base nutrients, your crops are already getting the correct amounts of Ca, Mg, and Fe. But if you're using our competitors base nutrients, your crops could suffer from stunted growth or yellowing leaves. In that case, use Sensi Cal-Mag Xtra the nutrient supplement formulated with the ratios of Ca, Mg, and Fe your crops need. As always, you're protected by our 100% money-back Grower Guarantee.\u003c\/p\u003e\u003cp\u003eSensi Cal-Mag Xtra is specially designed for use with all hydroponic growing media, including coco coir, as well as continuous liquid-feed growing systems such as aeroponics, drip irrigation and emitters, NFT, flood and drain, and deep water culture.\u003c\/p\u003e","brand":"Advanced Nutrients","offers":[{"title":"Default Title","offer_id":58442941792559,"sku":"400000001609","price":74.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/Advanced-Nutrients-Sensi-Cal-Mag-Xtra-4L.png?v=1788896792"},{"product_id":"advanced-sensi-cal-mag-xtra-1l","title":"Advanced Sensi Cal-Mag Xtra - 1L","description":"\u003cp\u003eSENSI CAL-MAG XTRA\u003c\/p\u003e\u003cp\u003eFeed Your Crops the Extra Calcium, Magnesium, and Iron They Need If You Use a Non-Advanced Base Nutrient\u003c\/p\u003e\u003cp\u003ePlants just like all forms of life, including human beings require a complete range of essential elements in order to thrive. Not one can be lacking, or your crops may suffer nutrient deficiencies. Of course, different concentrations of different nutrients are required by plants and animals at different stages of their lives. Just like young, developing children need vitamins and minerals, your plants need a steady supply of calcium and magnesium to ensure vigorous, healthy growth. But even expert growers often overlook another crucial element for high-value crops: specific forms of iron in precise ratios. If you're using our base nutrients, your crops are already getting the correct amounts of Ca, Mg, and Fe. But if you'e using our competitors base nutrients, your crops could suffer from stunted growth or yellowing leaves. In that case, use Sensi Cal-Mag Xtra the nutrient supplement formulated with the ratios of Ca, Mg, and Fe your crops need. As always, you're protected by our 100% money-back Grower Guarantee.\u003c\/p\u003e\u003cp\u003eSensi Cal-Mag Xtra is specially designed for use with all hydroponic growing media, including coco coir, as well as continuous liquid-feed growing systems such as aeroponics, drip irrigation and emitters, NFT, flood and drain, and deep water culture.\u003c\/p\u003e","brand":"Advanced Nutrients","offers":[{"title":"Default Title","offer_id":58442941923631,"sku":"400000001593","price":23.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/Advanced-Nutrients-Sensi-Cal-Mag-Xtra-1L.png?v=1788896799"},{"product_id":"emerald-harvest-cal-mag-2-5-gal","title":"Emerald Harvest Cal-Mag, 2.5 gal","description":"\u003cp\u003e Cal-Mag:\u003cbr\u003e\nUSE CAL-MAG SUPPLEMENT TO:\u003cbr\u003e\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReduce the risk of calcium or magnesium deficiencies.\u003c\/li\u003e\n  \u003cli\u003ePromote chlorophyll production in plants to keep them green and healthy vigorous.\u003c\/li\u003e\n  \u003cli\u003eActivate enzymes in plants that help plants uptake nutrients.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKeep your plants productive and green in any growing medium with this calcium-magnesium supplement. Containing top-quality ingredients, Cal-Mag is designed to nourish crops with extra calcium and magnesium and create the right conditions for abundant flowering and a heavy yield. This is especially important when growing in some media, such as coco coir, but any garden can benefit. Growers use calcium-magnesium supplements to correct nutritional deficiencies inherent to some popular growing media. Calcium supports growth and encourages plant development, while magnesium is essential for chlorophyll production, so the garden takes enough energy from light. Magnesium also helps to build the enzymes plants need to uptake nutrients. Emerald Harvest’s Cal-Mag also contains kelp, which is a rich, natural source of nutrients that can be beneficial for crops. \u003c\/p\u003e","brand":"Emerald Harvest","offers":[{"title":"Default Title","offer_id":58446127169839,"sku":"113141","price":104.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/1733fc12EMHCM25_1.jpg?v=1788975102"},{"product_id":"emerald-harvest-cal-mag-1-gal","title":"Emerald Harvest Cal-Mag - 1 Gal","description":"\u003cp\u003eKeep your plants productive and green with Cal-Mag, a calcium and magnesium supplement from Emerald Harvest®. Containing top-quality ingredients, Cal-Mag is designed to nourish crops with extra calcium and magnesium and create the right conditions for abundant flowering and a heavy yield. This is especially important when growing in some media, such as coco coir, but any garden can benefit. Use Cal-Mag as a supplement to a base nutrient series for guaranteed professional results.\u003c\/p\u003e","brand":"Emerald Harvest","offers":[{"title":"Default Title","offer_id":58446262993199,"sku":"108117","price":56.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/06a31c45108117.jpg?v=1788978697"},{"product_id":"emerald-harvest-cal-mag-1-qt","title":"Emerald Harvest Cal-Mag - 1 QT","description":"\u003cp\u003eKeep your plants productive and green with Cal-Mag, a calcium and magnesium supplement from Emerald Harvest®. Containing top-quality ingredients, Cal-Mag is designed to nourish crops with extra calcium and magnesium and create the right conditions for abundant flowering and a heavy yield. This is especially important when growing in some media, such as coco coir, but any garden can benefit. Use Cal-Mag as a supplement to a base nutrient series for guaranteed professional results.\u003c\/p\u003e","brand":"Emerald Harvest","offers":[{"title":"Default Title","offer_id":58446425522479,"sku":"108116","price":20.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/545f947d108116.jpg?v=1788980481"},{"product_id":"flying-skull-cal-mag-extreme-1-gal","title":"Flying Skull Cal Mag Extreme - 1 GAL","description":"\u003cp\u003eDuring bloom, plants really need calcium and magnesium. Although they're technically classified as micro-nutrients, calcium and magnesium are just as import to the success of your plants and yield as NPK. Flying Skull have also added Vitamin B1 and Iron to Cal-Mag eXtreme. Cal-Mag eXtreme can also be used as a leaf feed to correct leaf curl.\u003c\/p\u003e","brand":"Flying Skull","offers":[{"title":"Default Title","offer_id":58446505410863,"sku":"400000030883","price":31.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/fs116-pop.jpg?v=1788984978"},{"product_id":"flying-skull-cal-mag-extreme-5-gal","title":"Flying Skull Cal Mag Extreme - 5 GAL","description":"\u003cp\u003e The need for Calcium and Magnesium in bloom is great. While being classified as micro-nutrients, calcium and magnesium are just as important as NPK. We have added Iron and Vitamin B-1 to help magnesium’s role play with phosphorous. Flying Skull will always be trying to find better ways for the master gardener to better his crop and continue to manufacture only the finest formulations for plant growth and insect\/fungus control.\u003c\/p\u003e\n\u003cp\u003eUse Cal-Mag eXtreme as a leaf feed to correct leaf curl. Leaf curl or leaf deformation can occur after an application of soil or foliar fed plant food, pesticide or fungicide. To do this, add Cal-Mag eXtreme to water until you have added 200 PPM\/0.4 EC. Flush the growing media with Cal-Mag eXtreme until the runoff matches the EC\/PPM of the flush. Add Z7 to the water before adding the Cal-Mag eXtreme. When feeding the soil make sure the EC \/ PPM of the fertilizer feed match the runoff from the pot. This is critically important to maintain the proper osmotic transfer of minerals and water into the roots. Use an EC\/PPM meter to make the match.\u003c\/p\u003e","brand":"Flying Skull","offers":[{"title":"Default Title","offer_id":58446605025583,"sku":"115254","price":125.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/c3ed0ca7thumbnail.jpg?v=1788986796"},{"product_id":"flying-skull-cal-mag-extreme-2-5-gal","title":"Flying Skull Cal Mag Extreme - 2.5 GAL","description":"\u003cp\u003eDuring bloom, plants really need calcium and magnesium. Although they're technically classified as micro-nutrients, calcium and magnesium are just as import to the success of your plants and yield as NPK. Flying Skull have also added Vitamin B1 and Iron to Cal-Mag eXtreme. Cal-Mag eXtreme can also be used as a leaf feed to correct leaf curl.\u003c\/p\u003e","brand":"Flying Skull","offers":[{"title":"Default Title","offer_id":58446789935407,"sku":"107240","price":71.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/fs116-pop_339c0f17-cdc5-45d4-b323-19438ee638fd.jpg?v=1788988566"},{"product_id":"sensi-cal-mag-xtra-23l","title":"Sensi Cal Mag Xtra 23L","description":"\u003cp\u003eAdvanced Nutrients Sensi Cal-Mag Xtra is a calcium and magnesium supplement that also supplies iron, manganese and zinc, plus kelp. Use it to correct deficiencies, or preventively when you grow in coco, use RO or soft water, or run a high-demand garden. This listing is the 23 L size.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNPK 4-0-0, per Advanced Nutrients.\u003c\/li\u003e\n\u003cli\u003eChelated calcium and magnesium, plus chelated iron.\u003c\/li\u003e\n\u003cli\u003eChelated manganese and zinc.\u003c\/li\u003e\n\u003cli\u003eKelp supplies vitamins and amino acids.\u003c\/li\u003e\n\u003cli\u003eFor the vegetative and blooming stages, indoors or outdoors, with hand watering, watering systems, hydroponics, coco coir and foliar application.\u003c\/li\u003e\n\u003cli\u003eDesigned for hydroponic media and continuous liquid-feed systems, including aeroponics, drip irrigation and emitters, NFT, flood and drain, and deep water culture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTo correct deficiencies:\u003c\/strong\u003e 2 mL per liter. Repeat after 1 week if necessary.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoutine feeding:\u003c\/strong\u003e follow the Advanced Nutrients feeding chart for your stage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGood to know\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdvanced Nutrients says it is compatible with pH Perfect and non-pH Perfect base nutrients and supplements, including other brands'.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Advanced Nutrients","offers":[{"title":"Default Title","offer_id":58446936867119,"sku":"112624","price":281.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/7d8bb0d5apigq0ooz__91985.webp?v=1788995784"},{"product_id":"house-garden-commercial-calmag-5-lbs-pouch","title":"House \u0026 Garden Commercial CalMag, 5 lbs Pouch","description":"\u003cp\u003e \u003cstrong\u003eHouse \u0026amp; Garden Commercial CalMag\u003c\/strong\u003e is a readily available calcium\/magnesium fertilizer designed to encourage rapid growth and reduce problems associated with calcium and magnesium deficiencies.  Commercial CalMag is designed to be used with House \u0026amp; Garden Commercial grow throughout the vegetative phase, and it should be used with House \u0026amp; Garden Commercial Bloom during the flowering phase.  Recipe charts are available online at \u003ca href=\"https:\/\/house-garden.us\/\"\u003ehttps:\/\/house-garden.us\/\u003c\/a\u003e.House \u0026amp; Garden Commercial CalMag can also be used as a supplement with other nutrient regimens and is highly recommended for use with reverse osmosis water and when growing plants in coco coir. \u003c\/p\u003e","brand":"House \u0026 Garden","offers":[{"title":"Default Title","offer_id":58447191867695,"sku":"111329","price":49.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/a06b72dcHGCOMCM05LB_1.jpg?v=1789006536"},{"product_id":"cutting-edge-cal-mag-amplified-1-gal","title":"Cutting Edge Cal Mag Amplified - 1 GAL","description":"\u003cp\u003eCal-Mag Amplified is an ideal choice for supplementing your native soil with pure, rapidly absorbable forms of calcium and magnesium.\u003c\/p\u003e\u003cp\u003eCoco coir growers will greatly benefit from the use of Cal-Mag Amplified by providing additional calcium to buffer the coco and maximize cation exchange capacity. Higher levels of magnesium are necessary for some plant varieties and heirlooms that originate from equatorial regions. The additional source of magnesium in Cal-Mag Amplified will drive chlorophyll production and maximize photosynthesis. Plants fortified with calcium and magnesium exhibit lush green leaves and reward the farmer with heavy fruits.\u003c\/p\u003e\u003cp\u003eFoliar application is also highly recommended as a way to provide the plants with direct sources of calcium to fortify cell walls through the apolplast pathway, freeing mobile calcium to be used for fruit set. Spray when the sun is first rising or setting for the night to ensure stomata are fully dilated.\u003c\/p\u003e","brand":"Cutting Edge Solutions","offers":[{"title":"Default Title","offer_id":58448808575279,"sku":"400000020600","price":61.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/CES3503_1.jpg?v=1789025444"},{"product_id":"cutting-edge-cal-mag-amplified-1-qt","title":"Cutting Edge Cal Mag Amplified - 1 QT","description":"\u003cp\u003eCal-Mag Amplified is an ideal choice for supplementing your native soil with pure, rapidly absorbable forms of calcium and magnesium.\u003c\/p\u003e\u003cp\u003eCoco coir growers will greatly benefit from the use of Cal-Mag Amplified by providing additional calcium to buffer the coco and maximize cation exchange capacity. Higher levels of magnesium are necessary for some plant varieties and heirlooms that originate from equatorial regions. The additional source of magnesium in Cal-Mag Amplified will drive chlorophyll production and maximize photosynthesis. Plants fortified with calcium and magnesium exhibit lush green leaves and reward the farmer with heavy fruits.\u003c\/p\u003e\u003cp\u003eFoliar application is also highly recommended as a way to provide the plants with direct sources of calcium to fortify cell walls through the apolplast pathway, freeing mobile calcium to be used for fruit set. Spray when the sun is first rising or setting for the night to ensure stomata are fully dilated.\u003c\/p\u003e","brand":"Cutting Edge Solutions","offers":[{"title":"Default Title","offer_id":58448808739119,"sku":"400000020594","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/CES3501_1.jpg?v=1789025461"},{"product_id":"floraflex®-nutrients-cal-mag-iron-5-gal","title":"FLORAFLEX® NUTRIENTS - CAL + MAG + IRON (5 GAL)","description":"\u003cp\u003eFloraFlex Cal + Mag + Iron is a liquid supplement from FloraFlex that adds calcium, magnesium and iron to a nutrient mix. It is for growers whose source water runs low in calcium and magnesium. This listing is the 5 gallon size.\u003c\/p\u003e\n\u003ch3\u003eGood to know\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFloraFlex's mixing guide says to treat cal-mag as an extension of Part A: add it first and let it dissolve before Part B goes into the tank.\u003c\/li\u003e\n\u003cli\u003eFollow the feed rate printed on the label.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FloraFlex","offers":[{"title":"Default Title","offer_id":58449118101807,"sku":"112567","price":111.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/0b79a3cecal_mag_5gal_side.webp?v=1789039841"},{"product_id":"flying-skull-cal-mag-extreme-1-qt","title":"Flying Skull Cal Mag Extreme - 1 QT","description":"\u003cp\u003eDuring bloom, plants really need calcium and magnesium. Although they're technically classified as micro-nutrients, calcium and magnesium are just as import to the success of your plants and yield as NPK. Flying Skull have also added Vitamin B1 and Iron to Cal-Mag eXtreme. Cal-Mag eXtreme can also be used as a leaf feed to correct leaf curl.\u003c\/p\u003e","brand":"Flying Skull","offers":[{"title":"Default Title","offer_id":58451399344431,"sku":"400000030876","price":13.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/flying_skull_cal-mag_extreme_1l.jpg?v=1789095641"},{"product_id":"roots-organics-calmag-1-qt","title":"Roots Organics CalMag - 1 QT","description":"\u003cp\u003eRoots Organics CalMag is a pure and all natural blend of calcium, magnesium and sulfur to support plants during fast growth. By creating a product free of added nitrogen, phosphate, and potassium, Roots Organics give you control to supplement as needed without affecting primary fertility input ratios. Use in combination with high quality base fertilizers like Roots Organics Buddha Grow and Buddha Bloom.\u003c\/p\u003e\u003cp\u003eFree of added nitrogen, phosphate, and potassium\u003cbr\u003eIdeal for fast-growing and heavy feeding plants\u003cbr\u003eDerived from Kieserite, Gypsum\u003c\/p\u003e","brand":"Roots Organics","offers":[{"title":"Default Title","offer_id":58451423953199,"sku":"400000028347","price":26.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/ROCMQ_1.jpg?v=1789096569"},{"product_id":"roots-organics-calmag-1-gal","title":"Roots Organics CalMag - 1 GAL","description":"\u003cp\u003eRoots Organics CalMag is a pure and all natural blend of calcium, magnesium and sulfur to support plants during fast growth. By creating a product free of added nitrogen, phosphate, and potassium, Roots Organics give you control to supplement as needed without affecting primary fertility input ratios. Use in combination with high quality base fertilizers like Roots Organics Buddha Grow and Buddha Bloom.\u003c\/p\u003e\u003cp\u003eFree of added nitrogen, phosphate, and potassium\u003cbr\u003eIdeal for fast-growing and heavy feeding plants\u003cbr\u003eDerived from Kieserite, Gypsum\u003c\/p\u003e","brand":"Roots Organics","offers":[{"title":"Default Title","offer_id":58451448693039,"sku":"400000028446","price":86.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/ROCMG_1.jpg?v=1789098371"},{"product_id":"foxfarm-bush-doctor-cal-mag-1-qt","title":"FoxFarm Bush Doctor Cal-Mag - 1 qt","description":"\u003cp\u003eCal-Mag Supplement\u003cbr\u003e1 - 0 - 0, 3% Calcium 0.9% Magnesium\u003cbr\u003eNobody likes blossom end rot or tip burn. That’s why FoxFarm brings you BUSH DOCTOR CAL-MAG. Calcium and magnesium help strengthen cell walls and aid in fruit development, helping you avoid the costly and frustrating deficiencies that cause these problems. OMRI Listed and CDFA Registered for Organic Gardening.\u003c\/p\u003e","brand":"FoxFarm","offers":[{"title":"Default Title","offer_id":58451448922415,"sku":"103900","price":24.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/ed820927103900.jpg?v=1789098390"},{"product_id":"botanicare-cal-mag-plus-1-qt","title":"Botanicare Cal-Mag Plus - 1 QT","description":"\u003cp\u003eCal-Mag Plus is a highly fortified calcium, magnesium and iron plant supplement formulated to correct common deficiencies. Supplementing your preferred nutrient program with Cal-Mag Plus is strongly recommended when using reverse osmosis water and when growing in coco coir-based medias to compensate for natural calcium draw. Cal-Mag Plus can also be applied as a foliar spray to further enhance growth.\u003c\/p\u003e","brand":"Botanicare","offers":[{"title":"Default Title","offer_id":58453761851695,"sku":"400000002088","price":21.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/HGC732110-01.jpg?v=1789137948"},{"product_id":"botanicare-cal-mag-plus-1-gal","title":"Botanicare Cal-Mag Plus - 1 GAL","description":"\u003cp\u003eCal-Mag Plus is a highly fortified calcium, magnesium and iron plant supplement formulated to correct common deficiencies. Supplementing your preferred nutrient program with Cal-Mag Plus is strongly recommended when using reverse osmosis water and when growing in coco coir-based medias to compensate for natural calcium draw. Cal-Mag Plus can also be applied as a foliar spray to further enhance growth.\u003c\/p\u003e","brand":"Botanicare","offers":[{"title":"Default Title","offer_id":58453817065775,"sku":"400000002095","price":56.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/HGC732115-01.jpg?v=1789140696"},{"product_id":"botanicare-cal-mag-plus-2-5-gal","title":"Botanicare Cal-Mag Plus - 2.5 GAL","description":"\u003cp\u003eCal-Mag Plus is a highly fortified calcium, magnesium and iron plant supplement formulated to correct common deficiencies. Supplementing your preferred nutrient program with Cal-Mag Plus is strongly recommended when using reverse osmosis water and when growing in coco coir-based medias to compensate for natural calcium draw. Cal-Mag Plus can also be applied as a foliar spray to further enhance growth.\u003c\/p\u003e","brand":"Botanicare","offers":[{"title":"Default Title","offer_id":58454299476271,"sku":"400000002101","price":123.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/HGC732120-01.jpg?v=1789152362"},{"product_id":"floraflex®-nutrients-cal-mag-iron-1-gal","title":"FLORAFLEX® NUTRIENTS - CAL + MAG + IRON (1 GAL)","description":"\u003cp\u003eFloraFlex Cal + Mag + Iron is a liquid supplement from FloraFlex that adds calcium, magnesium and iron to a nutrient mix. It is for growers whose source water runs low in calcium and magnesium. This listing is the 1 gallon (3.78 L) size.\u003c\/p\u003e\n\u003ch3\u003eGood to know\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFloraFlex's mixing guide says to treat cal-mag as an extension of Part A: add it first and let it dissolve before Part B goes into the tank.\u003c\/li\u003e\n\u003cli\u003eFollow the feed rate printed on the label.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FloraFlex","offers":[{"title":"Default Title","offer_id":58454425043247,"sku":"111322","price":28.35,"currency_code":"USD","in_stock":true}]},{"product_id":"botanicare-cal-mag-plus-5-gal","title":"Botanicare Cal-Mag Plus - 5 GAL","description":"\u003cp\u003eCal-Mag Plus is a highly fortified calcium, magnesium and iron plant supplement formulated to correct common deficiencies. Supplementing your preferred nutrient program with Cal-Mag Plus is strongly recommended when using reverse osmosis water and when growing in coco coir-based medias to compensate for natural calcium draw. Cal-Mag Plus can also be applied as a foliar spray to further enhance growth.\u003c\/p\u003e","brand":"Botanicare","offers":[{"title":"Default Title","offer_id":58455369023791,"sku":"107138","price":231.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/HGC732125-01.jpg?v=1789181198"},{"product_id":"biobizz-calmag-1-liter","title":"BioBizz CalMag 1 Liter","description":"\u003cp\u003eBioBizz CalMag is a liquid calcium and magnesium supplement for growers who need extra Ca and Mg, whether they water with soft tap water or RO water. BioBizz describes it as a 100% organic, certified formula that won't change your preferred feeding program. This listing is the 1 liter bottle.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupplies calcium and magnesium, which play a key role in cell production and photosynthesis.\u003c\/li\u003e\n\u003cli\u003eFor growing and blooming, indoors or outdoors.\u003c\/li\u003e\n\u003cli\u003eWorks with regular watering and with hydroponics.\u003c\/li\u003e\n\u003cli\u003eSuitable for use in organic farming, according to BioBizz.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eAdd CalMag to your water first.\u003c\/li\u003e\n\u003cli\u003eMix in your BioBizz fertilizers.\u003c\/li\u003e\n\u003cli\u003eAdjust the pH of the nutrient mix.\u003c\/li\u003e\n\u003cli\u003eWater as usual.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eBioBizz's current data sheet gives the dose as \"on demand\" rather than a fixed rate, so dose to suit your water and follow the label.\u003c\/p\u003e\n\u003ch3\u003eGood to know\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe BioBizz feeding schedule calls for CalMag when you use soft or RO water.\u003c\/li\u003e\n\u003cli\u003eStore dry, at room temperature and away from direct light. Keep out of reach of children.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Biobizz","offers":[{"title":"Default Title","offer_id":58455585390895,"sku":"114188","price":31.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/f92f082741k_2B2asZK4L._AC_SL1000.jpg?v=1789184779"},{"product_id":"drip-hydro-cal-mag-quart","title":"Drip Hydro Cal Mag - Quart","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e• Our highly-concentrated Calcium and Magnesium supplement.\u003cbr\u003e\n• Designed to be used throughout both the vegetative and flowering stages of any fruit or flower-producing plants.\u003cbr\u003e\n• Also contains Nitrogen and Iron.\u003cbr\u003e\n• Dilution: 1-2 mL (0.03-0.07 fl. oz) per 4 L (1 gallon) of water, through Weeks 1-5 of any fruit or flower producing plants.\u003c\/p\u003e\n\u003cp\u003eWith a Calcium to Magnesium ratio of 4:1, CaMg is more concentrated than most other cal-mags on the market. This formulation of Calcium and Magnesium, as well as additional Nitrogen and Iron, provides your plants with the additional micro-nutrients they require and desire in Veg and Weeks 1-5 of Flowering.\u003c\/p\u003e\n\u003cp\u003eCalcium is critical to plant development. It is needed in large amounts by all plants for the formation of cell walls, cell membranes, and it plays a vital role in your medium’s structure. Due to the immobility of calcium in a medium and in plant tissues, a continuous supply must be present for your plants to access and uptake it.\u003c\/p\u003e\n\u003cp\u003eMagnesium is the powerhouse behind photosynthesis in plants. Without magnesium, chlorophyll cannot capture the light energy needed for photosynthesis.\u003c\/p\u003e\n\u003cp\u003eEven though there is Calcium and Magnesium in our Base A \u0026amp; B formulas, certain plant strains, growing mediums, and environments may require supplementation of a higher concentration of these micro-nutrients.\u003c\/p\u003e\n\u003cp\u003eMaximize your plants' genetic potential for growth and production in any growing medium.\u003c\/p\u003e","brand":"Drip Hydro","offers":[{"title":"Default Title","offer_id":58456644780335,"sku":"114971","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/852b2edbdriphydro-camg-allsizes-800px.webp?v=1789201841"},{"product_id":"drip-hydro-cal-mag-2-5-gal","title":"Drip Hydro Cal Mag - 2.5 GAL","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e• Our highly-concentrated Calcium and Magnesium supplement.\u003cbr\u003e\n• Designed to be used throughout both the vegetative and flowering stages of any fruit or flower-producing plants.\u003cbr\u003e\n• Also contains Nitrogen and Iron.\u003cbr\u003e\n• Dilution: 1-2 mL (0.03-0.07 fl. oz) per 4 L (1 gallon) of water, through Weeks 1-5 of any fruit or flower producing plants.\u003c\/p\u003e\n\u003cp\u003eWith a Calcium to Magnesium ratio of 4:1, CaMg is more concentrated than most other cal-mags on the market. This formulation of Calcium and Magnesium, as well as additional Nitrogen and Iron, provides your plants with the additional micro-nutrients they require and desire in Veg and Weeks 1-5 of Flowering.\u003c\/p\u003e\n\u003cp\u003eCalcium is critical to plant development. It is needed in large amounts by all plants for the formation of cell walls, cell membranes, and it plays a vital role in your medium’s structure. Due to the immobility of calcium in a medium and in plant tissues, a continuous supply must be present for your plants to access and uptake it.\u003c\/p\u003e\n\u003cp\u003eMagnesium is the powerhouse behind photosynthesis in plants. Without magnesium, chlorophyll cannot capture the light energy needed for photosynthesis.\u003c\/p\u003e\n\u003cp\u003eEven though there is Calcium and Magnesium in our Base A \u0026amp; B formulas, certain plant strains, growing mediums, and environments may require supplementation of a higher concentration of these micro-nutrients.\u003c\/p\u003e\n\u003cp\u003eMaximize your plants' genetic potential for growth and production in any growing medium.\u003c\/p\u003e","brand":"Drip Hydro","offers":[{"title":"Default Title","offer_id":58456712085807,"sku":"114980","price":53.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/852b2edbdriphydro-camg-allsizes-800px_4359890b-176d-47da-9b8c-ae7273a58652.webp?v=1789202780"},{"product_id":"drip-hydro-cal-mag-gal","title":"Drip Hydro Cal Mag - GAL","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e• Our highly-concentrated Calcium and Magnesium supplement.\u003cbr\u003e\n• Designed to be used throughout both the vegetative and flowering stages of any fruit or flower-producing plants.\u003cbr\u003e\n• Also contains Nitrogen and Iron.\u003cbr\u003e\n• Dilution: 1-2 mL (0.03-0.07 fl. oz) per 4 L (1 gallon) of water, through Weeks 1-5 of any fruit or flower producing plants.\u003c\/p\u003e\n\u003cp\u003eWith a Calcium to Magnesium ratio of 4:1, CaMg is more concentrated than most other cal-mags on the market. This formulation of Calcium and Magnesium, as well as additional Nitrogen and Iron, provides your plants with the additional micro-nutrients they require and desire in Veg and Weeks 1-5 of Flowering.\u003c\/p\u003e\n\u003cp\u003eCalcium is critical to plant development. It is needed in large amounts by all plants for the formation of cell walls, cell membranes, and it plays a vital role in your medium’s structure. Due to the immobility of calcium in a medium and in plant tissues, a continuous supply must be present for your plants to access and uptake it.\u003c\/p\u003e\n\u003cp\u003eMagnesium is the powerhouse behind photosynthesis in plants. Without magnesium, chlorophyll cannot capture the light energy needed for photosynthesis.\u003c\/p\u003e\n\u003cp\u003eEven though there is Calcium and Magnesium in our Base A \u0026amp; B formulas, certain plant strains, growing mediums, and environments may require supplementation of a higher concentration of these micro-nutrients.\u003c\/p\u003e\n\u003cp\u003eMaximize your plants' genetic potential for growth and production in any growing medium.\u003c\/p\u003e","brand":"Drip Hydro","offers":[{"title":"Default Title","offer_id":58456838570287,"sku":"114972","price":23.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/4875\/4479\/files\/852b2edbdriphydro-camg-allsizes-800px_259621fb-5cfe-499d-a5a9-b0b72b6ff8d9.webp?v=1789204589"}],"url":"https:\/\/mattshydroponics.com\/collections\/cal-mag.oembed?page=2","provider":"Matt’s Hydroponics","version":"1.0","type":"link"}