Hydroponic Media
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Cultiwool Cultiwool 6" x 6" x 6" Block w/ Optidrain & Donut Ring (48 Blocks/Case)
Cultiwools’ growing blocks are unique in the most efficient way. That has everything to do with the consistency of our products. Quick and easy uptake of water and the homogeneous distribution of water throughout the substrate are one of the most important features of a growing medium.Not only can you expect the highest quality stone wool in the market, but Cultiwool is also the first to introduce the ‘donut ring’ for the retail market to even further improve water distribution. This is in addition to the highly appreciated cross grooves to improve water flow under the block, and the black/white foil to prevent algae growth.The Cultiwool substrate blocks are provided with drain grooves at the bottom to improve the waterflow under the block. This is especially useful when the substrate blocks are placed on cultivation tables and concrete floors. Another benefit of the drain grooves under the block is that it will limit the contact surface with the ground. This will avoid bringing deseases in to the plant via weak roots often in combination with too high temperatures.As first in the industry, Cultiwool will provide the substrate with a donut ring as well, a water chamber around the plug hole to place your drippers. With the donut ring you will achieve an even more homogeneous distribution of the water throughout the block. A welcome second advantage is that you can not make any mistake anymore with the positioning of the drippers in the block. Cultiwool 6" x 6" x 6" Rockwool Blocks are sold by the case. Specifications Stonewool Block 1 Plug Hole 38mm / 40mm Drainage Width Grooves 6" x 6" x 6" (150mm x 150mm x 142mm) 48 Blocks/Case
$190.00
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Cultiwool Cultiwool 6" x 6" x 6" Block w/ Optidrain (48 Block/Case)
Cultiwools’ growing blocks are unique in the most efficient way. That has everything to do with the consistency of our products. Quick and easy uptake of water and the homogeneous distribution of water throughout the substrate are one of the most important features of a growing medium.Not only can you expect the highest quality stone wool in the market, but Cultiwool is also the first to introduce the ‘donut ring’ for the retail market to even further improve water distribution. This is in addition to the highly appreciated cross grooves to improve water flow under the block, and the black/white foil to prevent algae growth.The Cultiwool substrate blocks are provided with drain grooves at the bottom to improve the waterflow under the block. This is especially useful when the substrate blocks are placed on cultivation tables and concrete floors. Another benefit of the drain grooves under the block is that it will limit the contact surface with the ground. This will avoid bringing deseases in to the plant via weak roots often in combination with too high temperatures.As first in the industry, Cultiwool will provide the substrate with a donut ring as well, a water chamber around the plug hole to place your drippers. With the donut ring you will achieve an even more homogeneous distribution of the water throughout the block. A welcome second advantage is that you can not make any mistake anymore with the positioning of the drippers in the block. Cultiwool 6" x 6" x 6" Rockwool Blocks are sold by the case. Specifications Stonewool Block 1 Plug Hole 38mm / 40mm Drainage Width Grooves 6" x 6" x 6" (150mm x 150mm x 142mm) 48 Blocks/Case
$190.00
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Cultiwool Cultiwool 8'' Wide Slab (12 Slabs/Case)
Cultiwools’ stone wool growing slabs provide the final stage for growing crops. With the different dimensions and the possibilities of different plant holes pre-cut in the slabs, we have a solution for almost every growing system and required substrate volume per crop.Our Cultiwool slabs come standard with a vertical fibre orientation but on request we can also deliver a horizontal fibre in our stone wool slabs. Cultiwool stone wool is used worldwide by professional cultivators. It allows them to grow top quality produce with fewer inputs. The basis of a successful crop for a longer period is a substrate with a superb and consistent homogeneity. Cultiwool 8'' Wide Slabs are sold by the case. Specifications Stonewool Slab Fully Sealed Slabs 40" x 8" x 3" (1000mm x 200mm x 75mm) 12 Slabs/Case
$163.00
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Cultiwool Cultiwool 6'' Wide Slab (16 Slabs/Case)
Cultiwools’ stone wool growing slabs provide the final stage for growing crops. With the different dimensions and the possibilities of different plant holes pre-cut in the slabs, we have a solution for almost every growing system and required substrate volume per crop.Our Cultiwool slabs come standard with a vertical fibre orientation but on request we can also deliver a horizontal fibre in our stone wool slabs. Cultiwool stone wool is used worldwide by professional cultivators. It allows them to grow top quality produce with fewer inputs. The basis of a successful crop for a longer period is a substrate with a superb and consistent homogeneity. Cultiwool 6'' Wide Slabs are sold by the case. Specifications Stonewool Slab Fully Sealed Slabs 36" x 6" x 3" (1000mm x 150mm x 75mm) 16 Slabs/Case
$163.00
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Cultiwool Cultiwool 4" x 4" x 4" Block (144 Blocks/Case)
Cultiwools’ growing blocks are unique in the most efficient way. That has everything to do with the consistency of our products. Quick and easy uptake of water and the homogeneous distribution of water throughout the substrate are one of the most important features of a growing medium.Not only can you expect the highest quality stone wool in the market, but Cultiwool is also the first to introduce the ‘donut ring’ for the retail market to even further improve water distribution. This is in addition to the highly appreciated cross grooves to improve water flow under the block, and the black/white foil to prevent algae growth.The Cultiwool substrate blocks are provided with drain grooves at the bottom to improve the waterflow under the block. This is especially useful when the substrate blocks are placed on cultivation tables and concrete floors. Another benefit of the drain grooves under the block is that it will limit the contact surface with the ground. This will avoid bringing deseases in to the plant via weak roots often in combination with too high temperatures.As first in the industry, Cultiwool will provide the substrate with a donut ring as well, a water chamber around the plug hole to place your drippers. With the donut ring you will achieve an even more homogeneous distribution of the water throughout the block. A welcome second advantage is that you can not make any mistake anymore with the positioning of the drippers in the block. Cultiwool 4" x 4" x 4" Rockwool Blocks are sold by the case. Specifications Stonewool Block 1 Plug Hole 38mm / 40mm Drainage Width Grooves 4" x 4" x 4" (100mm x 100mm x 100mm) 144 Blocks/Case
$190.00
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Cultiwool Cultiwool 3" x 3" x 3" Block (400 Blocks/Case)
Cultiwools’ growing blocks are unique in the most efficient way. That has everything to do with the consistency of our products. Quick and easy uptake of water and the homogeneous distribution of water throughout the substrate are one of the most important features of a growing medium.Not only can you expect the highest quality stone wool in the market, but Cultiwool is also the first to introduce the ‘donut ring’ for the retail market to even further improve water distribution. This is in addition to the highly appreciated cross grooves to improve water flow under the block, and the black/white foil to prevent algae growth.The Cultiwool substrate blocks are provided with drain grooves at the bottom to improve the waterflow under the block. This is especially useful when the substrate blocks are placed on cultivation tables and concrete floors. Another benefit of the drain grooves under the block is that it will limit the contact surface with the ground. This will avoid bringing deseases in to the plant via weak roots often in combination with too high temperatures.As first in the industry, Cultiwool will provide the substrate with a donut ring as well, a water chamber around the plug hole to place your drippers. With the donut ring you will achieve an even more homogeneous distribution of the water throughout the block. A welcome second advantage is that you can not make any mistake anymore with the positioning of the drippers in the block. Cultiwool 3" x 3" x 3" Rockwool Blocks are sold by the case. Specifications Stonewool Block 1 Plug Hole 38mm / 40mm Drainage Width Grooves 3" x 3" x 3" (75mm x 75mm x 75mm) 400 Blocks/Case
$224.00
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Vivosun Vivosun Rockwool Grow Cubes Starter Sheets, 1" or 1.6" Plugs
Stonewool starter sheets for seeds, cuttings and hydroponic transplants. Each cube has a pre-formed hole for the seed or stem, the sheets hold their shape without crumbling, and once roots show you just break cubes off the sheet and set them into net pots or soil. Made from basalt rock spun into fibers and pressed into cubes About 95% porosity for air around the roots, with good water retention Inorganic and sterile Pre-formed hole in every cube; cut or separate cubes as needed 1.6" cubes (1.6" x 1.6" x 1.6"): 28 per sheet, sold as 1 sheet or 4 sheets (112 plugs) 1" cubes: 4 sheets, 200 plugs
$9.99 - $21.99
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Grower's Edge Block Cover 6"
For blocks of rockwool and other grow media. Grower's Edge Block Covers block light from media which helps reduce algae. Use white side up to reflect light. Use toothpick to hold cover in place. Hole in center of cover measures 1/2 inch in diameter.
$25.34 $22.80
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Grodan Grodan Gro Block Improved GR5.6 Large 3" w/Hole 3" x 3" x 4" (Shrink Wrapped Strip of 8)
Gro Block Improved GR5.6 Large 3" w/Hole 3" x 3" x 4" Shrink wrapped/Strip Grodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone wool substrate and irrigation strategies for specialty crops. The result of months of scientific research and trials is Grodan Gro-Blocks Improved with Grodan’s Advanced Wetting Agent. These leading-edge blocks have the optimal fiber structure and physical properties for crop uniformity, more even Water Content (WC) and Electrical Conductivity (EC) distribution throughout the entire block, and the greatest steering capabilities available. Water distribution is more uniform throughout the entire block which is the basis for a well-defined root system with higher capacities for water and nutrient uptake to produce robust and vigorous crops. New and improved wetting agent and hydrophilic technology greatly enhances the water characteristics of Grodan Gro-Blocks Improved giving even better water distribution over the height of the block. This results in greater plant development and steerability and more efficient use of water and nutrients. Optimized wool structure allows for faster rooting-in and nutrient solution replenishment, all while the Gro-Block Improved maintains its structure, firmness, and rigidity throughout the growing process.
$11.52
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Hydroton Mother Earth Hydroton Original Clay Pebbles - 50L
The original Hydroton brand expanded clay is a unique, lightweight expanded clay aggregate made in Germany. This natural clay is mined, formed into pellets, then kiln fired at high temperatures to cause the clay to expand into tough, lightweight balls. Clay naturally has balanced capillary action, with an ideal surface structure. Hydroton brand expanded clay is semi-porous and generally does not float like other products can. For best results, rinse all expanded clay before use. It is reusable as long as it is thoroughly cleaned between uses. 50 liter bags feature an easy-pour spout. Size specification is 8-16 mm.
$49.99
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Grodan Grodan Improved Gro-Block Hugo 6" x 6" x 5.8" (EACH)
Grodan Improved Grodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone wool substrate and irrigation strategies for specialty crops. The result of months of scientific research and trials is Grodan Gro-Blocks Improved with our Advanced Wetting Agent. These leading-edge blocks have the optimal fibre structure and physical properties for crop uniformity, more even Water Content (WC) and Electrical Conductivity (EC) distribution throughout the entire block, and the greatest steering capabilities available. Water distribution is more uniform throughout the entire block which is the basis for a well-defined root system with higher capacities for water and nutrient uptake to produce robust and vigorous crops.
$4.67 $4.66
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Grodan Grodan Macro Plugs - 50ct
These rockwool plant starting plugs feature a slit for easy insertion of rooted cuttings. Ideal for growers using aeroponic EZ-Clone machines. They fit perfectly into the holes of any standard rockwool blocks, inserted into pebbles, or any other type of growing media.
$15.26
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Grow!T GeoLite Clay Pebbles - 45L
GEOLITE clay pebbles serve as a strong, durable and versatile media, perfect for hydroponics and many horticultural applications. Made from 100% natural Italian clay, this media is industrially produced at extremely high temperatures (2200F/1200C) and specially treated for a consistent EC and stable, neutral pH. It offers great aeration and drainage, ensuring success with technically one of the best growing medias for your indoor garden. Thanks to GEOLITE clay pebbles' unique structure and ability to cover a large surface area, they offer the ideal environment to foster beneficial bacterial growth around the root zone. Ideal for drip feed, deep water culture, and flood and drain systems. 10L bag.Features:Stable and low-ECHigh total porosity (approximately 85% by volume) provides excellent root ventilation and oxygenation to plantsExcellent draining capacityStrong, stable and durableGreat for soil aeration and drainagePerfect for hydroponics, hydroculture, and aquaponics8-20 mm size
$36.55 $32.99
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Grodan Grodan Gro Block Improved Mini Block 2" Shrink Wrapped/Strip of 24
Grodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone wool substrate and irrigation strategies for specialty crops. The result of months of scientific research and trials is Grodan Gro-Blocks Improved with Grodan’s Advanced Wetting Agent. These leading-edge blocks have the optimal fiber structure and physical properties for crop uniformity, more even Water Content (WC) and Electrical Conductivity (EC) distribution throughout the entire block, and the greatest steering capabilities available. Water distribution is more uniform throughout the entire block which is the basis for a well-defined root system with higher capacities for water and nutrient uptake to produce robust and vigorous crops. New and improved wetting agent and hydrophilic technology greatly enhances the water characteristics of Grodan Gro-Blocks Improved giving even better water distribution over the height of the block. This results in greater plant development and steerability and more efficient use of water and nutrients. Optimized wool structure allows for faster rooting-in and nutrient solution replenishment, all while the Gro-Block Improved maintains its structure, firmness, and rigidity throughout the growing process.
$9.36
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Grodan Grodan Gro Block Improved Mini Block 2" (EACH)
Grodan 2" Gro Block. Sold individually.
$0.39
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Grodan Grodan Improved Uni-Slab 9.5in x 8in x 4in - (EACH)
Grodan Improved Gro-Slab and Uni-Slab Grodan Improved Gro-Slabs and Uni-Slabs offer a wide control range to steer your crop using irrigation strategies. Featuring the Advanced Wetting Agent, Gro-Slabs offer more uniform WC and EC distribution throughout each slab and from slab to slab. Fast rooting and vigorous growth throughout the entire growing cycle improve cannabis plant health, better resilience and higher yields. The improved slab structure and physical properties guarantee rapid resaturation within a wide steering range. Grodan Improved Gro-Slabs are the ideal solution for growers seeking a reliable substrate that facilitates easy irrigation and leaves nothing to chance throughout the cultivation period. Application Grodan Improved Gro-Slabs and Uni-Slabs are extremely versatile and lend themselves perfectly to the cultivation of cannabis. Blooming plants will show fast growth, uniform stem development and early setting. Product Features Single plant and multi-plant slab options Vertical fiber orientation Inert hydrophilic fibre technology High resaturation capacity Uniform water distribution throughout the Grodan Improved Uni-Slabs SOLD INDIVIDUALLY
$7.67
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Grodan Pargro Quick Drain Slab 36" x 6" x 4" (EACH)
Pargro is the leader among affordable horticultural rockwool. Made right in the Grodan factory, so you can be assured of a high quality product at a great price.DrainageDriest value-priced rockwool on the market14% drier than competitor blocksValueValue priced no frills saves you moneyHalf case sizes in plain boxesQualityCheap in price but not in strength and uniformityMade under quality control at Grodan factories
$8.59
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Grodan Grodan Expert Slab 15/75 - 36" X 6" X 3" (EACH)
Grodan Improved pre-cut Gro-Slabs are an efficient and ideal solution for growers seeking a reliable substrate that facilitates easy irrigation and leaves nothing to chance throughout the cultivation period. Grodan Improved pre-cut Gro-Slabs are extremely versatile and lend themselves perfectly to cultivation. Blooming plants will show fast growth, uniform stem development and early setting. Grodan Improved pre-cut Gro-Slabs offer a wide control range to steer your crop using irrigation strategies. Featuring the Advanced Wetting Agent, these Gro-Slabs offer more uniform WC and EC distribution throughout each slab and from slab to slab. Fast rooting and vigorous growth throughout the entire growing cycle improve plant health, better resilience, and higher yields. The improved slab structure and physical properties guarantee rapid re-saturation within a wide steering range. Product Features Multi-plant and slab hole size options Vertical fiber orientation Inert hydrophilic fibre technology High re-saturation capacity Uniform water distribution throughout the pre-cut Grodan Improved Uni-Slabs Key Benefits Retains sufficient water The Advanced Wetting Agent in all Grodan Improved Gro-Slab’s results in more uniform water distribution throughout the entire slab. As the slab retains sufficient moisture at all times the risk of plants drying out is minimized. The improved capillary action of Gro-Slabs also ensures that moisture is retained more evenly throughout the entire slab. Easy irrigation The properties of all Grodan Improved Gro-Slabs enable a multi-faceted irrigation strategy by allowing growers to vary the water volume within a safe range of between 55% and 78% (day level). If insufficient water has been supplied, the slab can be re-saturated quickly at any desired moment. And if too much water has been given, the slab’s properties will ensure that excess water is drained away efficiently to prevent the WC from rising too high. Fast, uniform crop development The vertical, fibrous structure of all Grodan Improved Gro-Slabs enables roots to penetrate the slab easily, resulting in fast root development. Homogenous development in the root zone guarantees vigorous and uniform crop growth resulting in stronger, healthier plants. In addition, the firmness of the slab structure guarantees a stable root volume right up until the end of the cultivation cycle. Excellent Steerability The ability of Grodan Improved products to distribute WC and EC evenly throughout the slab volume creates optimal steering capabilities. Growers have more control of the plant’s balance throughout the crop cycle, allowing plant steering with precise adjustments of the WC and EC in the rootzone. Sustainable water and nutrient use Stone wool fibres do not bind nutrients and do not require flushing at the start of the cultivation cycle. An initial targeted application of water and nutrients in the cultivation cycle enables sustainable water and fertilizer use. In combination with other management strategies, including GroSens and e-Gro tools that enable precision growing, Grodan Improved GroSlabs facilitate optimum crop steering for healthy plants and greater yields
$13.99
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Grodan Gro Block Improved Large 4" GR10 w/ hole 4"x4"4" - (Wrapped Strip of 6)
Grodan's Improved Gro-Blocks™ utilize improved hydrophilic technology and density for better water distribution and root development. Shrink Wrapped.
$12.46 $11.49
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Hydrofarm Rockwool Block Covers, 4", Pack of 40
PLASTIC BLOCK COVERS Reflect light to plant leaves, where it’s needed most. Block light from media. Eliminate algae and mildew growth. 40 dual sided block covers per pack. Works great with GRODAN Blocks. Block light from media Reflect light to plant leaves where it's needed most Eliminate algae and mildew growth 40 dual-sided block covers per pack
$15.55
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Grodan Grodan Mini Blocks 1.5"X1.5" (EACH)
Mini-Blocks 1.5"x1.5". Sold individually
$0.27
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Grodan Grodan Expert 20/75 Slab - 36" x 8" x 3" - (EACH)
Gro-Slabs provide the final stage for growing a spectacularly large plant. Transplant your Gro-Block plant onto a slab just like professional growers. They come in clearly marked biodegradable UV-resistant sleeves for comfortable handling and algae prevention. With the Uni-Slab, all plant roots are protected and contained for the life of the plant. Due to its size, the Uni-Slab is perfect for one large plant. Uni-Slab has the benefits of a slab with the versatility of a block. All Gro-Slabs have vertical fibers except the 12 in Gro-Slab, which has horizontal fibers.
$13.63
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Grodan Grodan Mini Blocks - 1.5" / 45ct
Mini-Blocks sit in a tray (flat) without support for easy starting of seeds and cuttings. These Mini-Blocks are individually wrapped in white plastic to minimize algae growth. Remove wrapping and transplant into any loose media such as Grow-Cubes or coconut fiber or leave wrapping on and set on top of a larger Gro-Block. Packed in easy tear-away strips, labeled with instructions.
$12.15
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Hydroton Mother Earth Hydroton Original Clay Pebbles - 25L
The original Hydroton brand expanded clay is a unique, lightweight expanded clay aggregate made in Germany. This natural clay is mined, formed into pellets, then kiln fired at high temperatures to cause the clay to expand into tough, lightweight balls. Clay naturally has balanced capillary action, with an ideal surface structure. Hydroton brand expanded clay is semi-porous and generally does not float like other products can. For best results, rinse all expanded clay before use. It is reusable as long as it is thoroughly cleaned between uses.
$27.65
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