DENI-BALLS x 50 Balls

DENI-BALLS made from a special biological based plastic material and contain a long-term carbon and nutrtion food source for anaerobe bacteria. It will be used by the anererobe bacteria completely. In the absence of oxygen, the anaerobic bacteria metabolize the deni-balls material to accelerate the reduction of nitrates into nitrogen gas. These bacteria may reduce the nitrate to zero,  avoids algae multiplying.

The product may lay aside in the nitrate reactor/reductor for use. It may last for up to 12 month. Replacing is recommended to ensure dinitrification in aquariums.