General Hydroponics

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GH 1500 PPM Reference Solution 8 oz

General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many..

$8.20 $7.38

GH pH 4.01 Calibration Solution 8 oz

General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many..

$7.54 $6.79

GH pH 4.01 Calibration Solution Quart

General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many..

$21.50 $19.35

GH pH 7.01 Calibration Solution 8 oz

General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many..

$7.54 $6.79

GH pH 7.01 Calibration Solution Quart

General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many..

$21.50 $19.35

GH pH Control Kit

General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial...

$17.20 $15.48

GH pH Down Liquid Quart

The Acid formulation uses food grade Phosphoric acid to lower the pH to the proper level...

$10.76 $9.68

GH pH Down Liquid Gallon

The Acid formulation uses food grade Phosphoric acid to lower the pH to the proper level...

$26.90 $24.21

GH pH Test Kit 1 oz

General Hydroponics pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient..

$7.54 $6.79

GH pH Up Dry 2.2 lb

This Base solution is formulated using Potassium Hydroxide and Potassium Carbonate. Add a little at ..

$15.20 $13.68

GH pH Up Liquid Quart

This Base solution is formulated using Potassium Hydroxide and Potassium Carbonate. Add a little at ..

$10.76 $9.68

GH pH Up Liquid Gallon

This Base solution is formulated using Potassium Hydroxide and Potassium Carbonate. Add a little at ..

$26.90 $24.21