Calibration Solutions
Advanced Nutrients pH Up
Advanced Nutrients
Original price
$24.00
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Original price
$24.00
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$24.00
$24.00
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$24.00
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$24.00
Original price
$24.00
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Original price
$24.00
Original price
$24.00
$24.00
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$24.00
Current price
$24.00
Advanced Nutrients pH Down
Advanced Nutrients
Original price
$24.00
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Original price
$24.00
Original price
$24.00
$24.00
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$24.00
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$24.00
Original price
$24.00
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Original price
$24.00
Original price
$24.00
$24.00
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$24.00
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$24.00
Bluelab 2.77 EC Conductivity Standard Solution
Bluelab
Original price
$15.00
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Original price
$25.00
Original price
$15.00
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$25.00
$15.00
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$25.00
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$15.00
Original price
$15.00
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Original price
$25.00
Original price
$15.00
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$25.00
$15.00
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$25.00
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$15.00
Bluelab pH 4.0 Calibration Solution
Bluelab
Original price
$12.00
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$20.00
Original price
$12.00
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$20.00
$12.00
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$20.00
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$12.00
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$12.00
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Original price
$20.00
Original price
$12.00
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$20.00
$12.00
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$20.00
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$12.00
Bluelab pH 7.0 Calibration Solution
Bluelab
Original price
$12.00
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$20.00
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$12.00
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$20.00
$12.00
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$20.00
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$12.00
Original price
$12.00
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Original price
$20.00
Original price
$12.00
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$20.00
$12.00
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$20.00
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$12.00
General Hydroponics pH Test Indicator
General Hydroponics
Original price
$8.00
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Original price
$15.00
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$8.00
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$15.00
$8.00
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$15.00
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$8.00
General Hydroponics pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator, and ob...
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Original price
$8.00
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Original price
$15.00
Original price
$8.00
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$15.00
$8.00
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$15.00
Current price
$8.00
General Hydroponics pH Down
General Hydroponics
Original price
$12.00
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Original price
$30.00
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$12.00
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$30.00
$12.00
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$30.00
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$12.00
*Uses food-grade phosphoric acid to lower the pH to the proper level. To maximize plant growth, the pH content of your nutrients should be slightly...
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$12.00
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Original price
$30.00
Original price
$12.00
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$30.00
$12.00
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$30.00
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$12.00
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General Hydroponics pH Up
General Hydroponics
Original price
$12.00
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Original price
$30.00
Original price
$12.00
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$30.00
$12.00
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$30.00
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$12.00
*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 ...
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Original price
$12.00
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Original price
$30.00
Original price
$12.00
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$30.00
$12.00
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$30.00
Current price
$12.00
General Hydroponics pH Control Kit
General Hydroponics
Original price
$20.00
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Original price
$20.00
Original price
$20.00
$20.00
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$20.00
Current price
$20.00
General Hydroponics pH Control Kit contains 8 oz of GH pH Up, 8 oz GH pH Down, 1 oz of the GH pH Test Indicator and a test vial. GH pH Up - Add a ...
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Original price
$20.00
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Original price
$20.00
Original price
$20.00
$20.00
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$20.00
Current price
$20.00