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pH/EC

22 products
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Regular price $14.99
Sale price $14.99
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The acid formulation uses phosphoric acid to lower the pH to the proper level. Available in store only.
Regular price $13.99
Sale price $13.99
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This Base solution is formulated using potassium hydroxide and potassium carbonate. Add a little at a time when your nutrient pH is too low in order to raise the pH to the proper level. Available i...
Regular price $8.59
Sale price $8.59
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Drops- General 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 tes...
Regular price $9.99
Sale price $9.99
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The acid formulation uses phosphoric acid to lower the pH to the proper level. Available in store only.
Regular price $22.99
Sale price $22.99
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General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial.
Regular price $2.69
Sale price $2.69
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Bluelab® 7.0 Calibration Solution- 18ml Bluelab calibration solution pH 7 18ml sachet.