Top 6 Best General Tennessee Travel Guides

General Hydroponics pH Control Kit contains everything you need to measures pH levels of your hydroponic grow reservoirs. RELIABLE RESULTS The streamlined testing system delivers fast, accurate, and easy-to read results every time. ALL-IN-ONE KIT Includes 8 oz. 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 prefer our pH Test Kit to expensive electronic meters because of its reliability and ease-of- use. EASY TO USE To use, simply fill a test tube halfway with nutrients, add a few drops of pH test indicator, and observe the coloration of the liquid recommended pH for most plants is 5.5 to 6.5.