Nutrients & Additives
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Luster Leaf Luster Leaf Digital Soil pH Meter
Digital results from 3.5 to 9.0. Instructions and plant pH preference list included.
$18.99
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Luster Leaf Luster Leaf Rapitest pH Test
Luster Leaf Rapitest pH Test
$21.29
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Chemboys Chemboys Citric Acid - 1lb
Use Chemboys Citric Acid to help treat soil alkalinity. If your soil has high alkalinity for a particular plant, citric acid can be mixed in with the soil to help raise the soil's pH. In low doses, Chemboys Citric Acid can be a beneficial repellent of certain organisms and pests.Citric Acid lies below 4.0 on the pH scale, meaning that it is acidic and potentially corrosive. The optimal pH for plant growth is between 5.5 and 7.5
$13.99
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Luster Leaf Luster Leaf Rapitest Ph Moisture Tester
Signals soil moisture level. Indicates soil acidity/alkalinity. Includes watering needs for many plants. No batteries required.
$14.19
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Luster Leaf Luster Leaf® Rapitest® Soil pH Meter
Checks which plants suit your soil pH and tells you how to alter soil. A pH performance guide for more than 350 plants is included. Ideal for potted indoor and outdoor plants. Simple readout.
$27.99
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Luster Leaf Luster Leaf® Rapitest® Light & Moisture Meter - Dual Tester
Instantly tells you when to water your plants and indicates how much light they need. Helps prevent over and under watering as well as poor growth. Includes a plant care booklet that gives individual needs for over 150 plants.
$29.99
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Luster Leaf Luster Leaf® Rapitest® Soil pH Tester - Test pH levels
Luster Leaf's Rapitest Soil pH Tester (model 1815) is a single-probe meter for checking the pH of your soil. A cleaning pad comes with it to keep the probe shiny for accurate readings.How to use Remove the top 2" of soil and crumble the soil below to a depth of 5". Take out stones and organic matter, then wet the soil to a mud consistency, ideally with rain or distilled water. Lightly shine 4"-5" of the probe with the supplied pad, avoiding the bullet-shaped tip, and wipe it clean. Push the probe straight down 4"-5" (never force it), twist it back and forth a few times, and read after 60 seconds. For a second reading, wipe the probe and test a new spot. If the first reading was pH 7 or above, reshine the probe and read after 30 seconds; if it was below 7, don't reshine and read after 60 seconds. Good to knowFor use in soil only. Do not use it in liquids.
$11.99
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Luster Leaf Luster Leaf® Rapitest® Electronic Soil Tester - Dual Tester
Determines soil pH and fertility level. Both tests can be completed in about a minute. Requires one AA battery. Complete instructions include how to adjust pH and select appropriate fertilizers according to soil conditions.
$30.99
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HM Digital HM Digital PH-STOR pH Electrode Storage Solution
For use with HM Digital's PH-200 and PH-80 (as well as other brands of pH meters). Always make sure your sensor is kept in an electrode storage solution. If dry, refill the pH meter cap with the PH-STOR storage solution. The sponge should be moist (not soaking wet).
$8.95
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Bluelab Bluelab pH 7.0 Calibration Solution - 500ML
pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope). Calibration Solution should be stored in a cool place out of direct sun and heat. They should be stored with the lids securely tightened.
$23.00
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General Hydroponics General Hydroponics PRO pH Down 2.5 gal
General Hydroponics Pro pH adjusters are based on completely different technology than our traditional smaller sized adjusters offering. New non-mineral based acids and bases will not add nutrient value like the use of phosphoric acid or potassium hydroxide. They are safer to use as well as compared to mineral based adjusters. This is due to having a zero rating score for all safety categories on the HMIS scale as well as being non-corrosive and non-caustic. This means there are no HazMat fees to ship these products like other pH adjusters. Use Pro pH UP or Pro pH DOWN to effectively adjust the pH of nutrient solutions or irrigation water. GH Pro pH adjusters are highly concentrated and available in commercial sizes. Non-Caustic Non-Corrosive Do not need to be shipped Hazmat like other adjusters Alternative to harsh mineral hydroxides Triple zero HMIS score Does not contribute nutritional value like other adjusters Concentrated Formula
$179.83 $161.85
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Luster Leaf Luster Leaf Digital Moisture Meter
Digital results from 0 to 9.9. Printed instructions and extensive plant list.
$18.59
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Luster Leaf Luster Leaf Mini Moisture Tester
Luster Leaf Mini Moisture Tester
$9.39
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General Hydroponics GH pH Down Liquid - 1 GAL
The acid formulation uses food-grade phosphoric acid to lower the pH to the proper level.
$41.79
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General Hydroponics GH pH Up Liquid - 8OZ
This Base solution is formulated using potassium hydroxide and potassium carbonate. Add a little at a time when your nutrient pH is too low in order to raise the pH to the proper level.
$11.33
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General Hydroponics GH pH Down Liquid - 8OZ
The acid formulation uses food-grade phosphoric acid to lower the pH to the proper level.
$11.33
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General Hydroponics General Hydroponics PRO pH Up 2.5 gal
General Hydroponics Pro pH adjusters are based on completely different technology than our traditional smaller sized adjusters offering. New non-mineral based acids and bases will not add nutrient value like the use of phosphoric acid or potassium hydroxide. They are safer to use as well as compared to mineral based adjusters. This is due to having a zero rating score for all safety categories on the HMIS scale as well as being non-corrosive and non-caustic. This means there are no HazMat fees to ship these products like other pH adjusters. Use Pro pH UP or Pro pH DOWN to effectively adjust the pH of nutrient solutions or irrigation water. GH Pro pH adjusters are highly concentrated and available in commercial sizes. Non-Caustic Non-Corrosive Do not need to be shipped Hazmat like other adjusters Alternative to harsh mineral hydroxides Triple zero HMIS score Does not contribute nutritional value like other adjusters Concentrated Formula
$179.83
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General Hydroponics GH Ph Control Kit
General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial.
$24.34
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General Hydroponics GH pH Down Liquid - 1 QT
The acid formulation uses food-grade phosphoric acid to lower the pH to the proper level.
$16.78
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General Hydroponics GH pH Up Liquid - 1 GAL
This Base solution is formulated using potassium hydroxide and potassium carbonate. Add a little at a time when your nutrient pH is too low in order to raise the pH to the proper level.
$41.79
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General Hydroponics GH pH Up Liquid - 1 QT
This Base solution is formulated using potassium hydroxide and potassium carbonate. Add a little at a time when your nutrient pH is too low in order to raise the pH to the proper level.
$16.78
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Microbe Life Hydroponics Microbe Hydroponics pH down - 32OZ
Microbe Life Hydroponics pH DOWN is formulated with R/O and UV sterilized water and combines two pH adjusters for buffered effectiveness. It contains three electrolytes to help maintain osmotic balance.Safely lowers pH levelsCombines 2 pH adjusters for buffered effectivenessContains 3 electrolytes to help maintain osmotic balanceWill not harm plants
$18.99
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Microbe Life Hydroponics Microbe Hydroponics PH Up - 32OZ
Microbe Life Hydroponics pH UP is formulated with R/O and UV sterilized water and combines two pH adjusters for buffered effectiveness. It contains three electrolytes to help maintain osmotic balance.Safely raises pH levelsCombines 2 pH adjusters for buffered effectivenessContains 3 electrolytes to help maintain osmotic balanceWill not harm plants
$18.99
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Bluelab Bluelab pH 4.0 Calibration Solution - 500ML
pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope). Calibration Solution should be stored in a cool place out of direct sun and heat. They should be stored with the lids securely tightened.
$23.00
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