Powerful bacterial additive helps reduce aquarium maintenanceNatural bacteria break down organic waste from aquarium gravelCleans sludge and organic buildup from aquarium equipment and accessoriesSimplify gravel and substrate maintenance in one easy step. Special aerobic heterotrophic bacteria naturally eliminates pollution from uneaten fish food and fish waste. Also breaks down organic buildup on equipment and accessories to reduce manual maintenance. 16 oz treats 950 gallons.Please click on "More Information" for directions for use.

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