Mills pH-
Updated 18 Oct 2026
Mills pH- is a highly concentrated pH down solution (59% phosphoric acid) for lowering the pH of nutrient solutions and irrigation water at every stage of the grow. Recommended pH is 5.5-6.0 for hydro and 6.0-6.5 for soil.
Usage & Instructions
Add dropwise in small steps, mixing and measuring in between, until the desired pH is reached: 5.5-6.0 for hydro, 6.0-6.5 for soil.
Product Specifications
Description
Mills pH- lowers the pH of nutrient solutions and irrigation water so that nutrients and substrate stay in balance. It contains 59% phosphoric acid, giving a strong effect and long use per bottle.
Additives
All products in the Additives range.
Mills CalMag
Mills CalMag is a highly concentrated liquid calcium and magnesium supplement. It corrects and prevents Ca and Mg deficiencies, supports growth and vitality and stabilises EC, and is essential with soft water or reverse-osmosis water.
Mills pH+
Mills pH+ is a highly concentrated pH up solution (50% potassium hydroxide) for raising the pH of nutrient solutions and irrigation water at every stage of the grow. Recommended pH is 5.5-6.0 for hydro and 6.0-6.5 for soil.
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