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COMBO GH PH UP 1 GAL X 4 PIN high phosphorus formula containing all 6 926 high phosphorus formula containing all 6 essential macronutrients and all 10 essential micronutrients that plants need reliable irrigation control via your smartphone or tablet 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
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