Xport Freshwater BIO Brick

For use in all soft or hard freshwater or brackish aquariums; may also be used in marine systems 

When properly colonized, and used as directed, it will reduce toxic ammonia and nitrites to near zero in all freshwater aquariums 

Provides huge amounts of aerobic and anaerobic surface area for efficient bacterial colonization 

Reduces phosphate significantly and dissolved organics 

Works excellently as the only filtration medium for the aquarium or pond or may be employed in addition to other filtration media