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Non-Pesticide
maintained by a shut-off valve
You’ve given your plants the best environment
Use it to start fruiting plants like tomatoes
General Hydroponics® pH Test Indicator 8 oz Grotek Non-PesticideGeneral 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.
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