PondCare pH Down pH Adjuster

PondCare pH Down pH Adjuster slowly lower the pH of pond water (making it more acidic) without harming delicate pond fish or aquatic plants. PondCare pH Down pH Adjuster slowly neutralizes alkaline substances that cause high pH (pH of pond water is affected by mineral leaching, soil runoff & decomposing waste). A high pH limits the ability of aquatic plants to absorb necessary nutrients. Contains no algae-promoting phosphates.