UltraClear® Filter Start Beneficial Bacteria, 16oz Sinking As an EPA-registered algaecide

As an EPA-registered algaecide

Koi ponds and water gardens

5" bottom drain

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UltraClear® Filter Start Beneficial Bacteria, 16oz Sinking As an EPA-registered algaecideUltraClear Filter Start is a super concentrated mixture of natural garden bacteria that work together to consume all typical pond wastes! Instead of waiting weeks for your biological filter to slowly develop an effective biomass, give it a jump start with Filter Start! Includes: Nitrifying bacteria that oxidize toxic ammonia and nitrite to relatively non toxic nitrate Denitrifying bacteria that convert nitrates to completely harmless nitrogen gas