General Hydroponics pH Up Liquid, 8 oz. General Hydroponics pH Down Liquid, 1 oz. Test Indicator, test tube, an eyedropper, and a pH level chart THE PREFERRED WAY OF TESTING pH: Seasoned growers ...

Hydroponic gardening ... within the specific pH range your plant requires, although most plants thrive in a pH of 6.0 to 7.0. To keep track of your pH levels, use a pH testing kit and adjust the ...