pH Down Adjustment Solution (75%, 65 lb)Use this food grade Phosphoric acid solution to adjust the pH of nutrient solutions. Dilute it to the desired ratio (typically 10%). To maximize plant growth, the pH of nutrient solutions should be slightly acidic (typically between 5. 5 and 6. 5). Shipping: Due to fees charged by shipping companies for hazardous materials shipments, $35 will be added to your shipping cost when we process the order. Downloads 75% dilution and SDS
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