An 81% solution of phosphoric acid, used to lower the pH of nutrient solutions. It is reasonably acidic of course. Though not really dangerous, pH DOWN should certainly be handled with caution.
pH Down The premium solution maintains and lowers a nutrient's pH level. Acid formulated using food grade Phosphoric acid. Just add a little at a time if your nutrient pH is too high in order to lower the pH to the proper level.
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