General Hydroponics pH Test Color Match Control Kit 4-Inch Carbon Filters ensuring that you achieve the

ensuring that you achieve the desired grooming level without over-trimming

No more messy spills or wasted nutrient solution

carbohydrates

Keep a fan moving so the gas does not pool on the floor out of reach

Ambidextrous

General Hydroponics pH Test Color Match Control Kit 4-Inch Carbon Filters ensuring that you achieve theContains 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), Ph Down (uses food grade Phosphoric acid to lower the pH to the proper level), and 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).