General Hydroponics pH Control Kit

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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 f ast, 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 Show more