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 little at a time when your nutrient pH is too low in order to raise the pH to the proper level.
• GH pH Down - Uses food grade Phosphoric acid to lower the pH to the proper level.
• GH pH Test Indicator - fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator, and observe the coloration of the liquid in the test vial. Use 3 drops per 5mL of solution.