Meters & Solutions

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General Hydroponics pH Up Dry 16lbs. Base

To maximize plant growth, the pH content of your nutrients should be slightly acidic. Experienced gr..

$115.20 $94.46

GH 1500 PPM Reference Solution 8 oz

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

$8.20 $6.72

GH pH 4.01 Calibration Solution 8 oz

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

$7.54 $6.18

GH pH 4.01 Calibration Solution Quart

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

$21.50 $17.63

GH pH 7.01 Calibration Solution 8 oz

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

$7.54 $6.18

GH pH 7.01 Calibration Solution Quart

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

$21.50 $17.63

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 $14.10

GH pH Down Liquid Quart

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

$10.76 $8.82

GH pH Down Liquid Gallon

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

$26.90 $22.06

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 $6.18

GH pH Up Dry 2.2 lb

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

$15.20 $12.46

GH pH Up Liquid Quart

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

$10.76 $8.82

GH pH Up Liquid Gallon

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

$26.90 $22.06

Gold Label Ultra pH 4 Liter

Gold Label Ultra pH- is a universal acid for adjusting the pH levels of nutrient solutions. It conta..

$76.95 $63.10

Grow More pH Down 30% Quart

Convenient ready to use liquids, concentrated, fast acting, high purity food grade ingredients. Use ..

$8.34 $6.84