The POLY-FILTER is for filtering and purifying both fresh and saltwater aquariums. It is a formulation of a special patented material bonded to a synthetic matrix. Using a unique proprietary process, the POLY-FILTER is made impervious to salt and is also organic-loving to certain materials. It can absorb and adsorb contaminants and other toxic materials found in nature or added to fresh and saltwater with or without fish and invertebrates. Medication added to fresh and saltwater aquariums for the treatment of diseased fish will automatically be removed by the POLY-FILTER after serving its intended purpose before the medication can produce a toxic effect on the fish.

The POLY-FILTER is non-toxic and harmless to biological filtration because it allows a sufficient amount of ammonia to reach the biological filter to sustain the bacteria culture. The POLY-FILTER provides a supplemental means for the removal of ammonia when the biological filter is unable to break down the excess ammonia and its concentration increases rapidly. Then the POLY-FILTER adsorbs the excess ammonia while the biological filter readjusts to higher ammonia input levels. Changes color when exhausted. 
 
Two Sizes Available:
4" x 8"
12"x12"