General Hydroponics pH Test Color Match Control Kit 4-Inch Carbon Filters No more messy spills or

No more messy spills or wasted nutrient solution

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

With accessories like a waterproof floor tray

3" H Weight 5

By following the recommended dosage

General Hydroponics pH Test Color Match Control Kit 4-Inch Carbon Filters No more messy spills orContains 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).