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Rich in phosphorus
daylight readable blue LEDs and no on/off buttons to worry about
Accommodates planters up to 500 lbs
With its unsurpassed texture
Captures particles (including mold spores) down to 1 micron in size
GH pH Test Indicator 8 oz Rich in phosphorusGeneral Hydroponics pH Test Kits make pH testing easy. Simply 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. Many experienced growers prefer our pH Test Kit to expensive electronic meters because of its reliability and ease of use, which are important factors when the health of a valuable crop is at stake. Use 3 drops per 5ml of solution.
