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- General Hydroponics pH control kit contains 8 ounce pH up, 8 ounce pH down, 1-ounce indicator, and a vial.
- General Hydroponics pH control kit makes 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 growers prefer our pH test kit to expensive electronic meters because of its reliability and ease of use.
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