The POLY-FILTER is for filtering and purifying both fresh and salt water aquariums. It is made from a patented material bonded to a synthetic matrix, allowing it to absorb and adsorb contaminants and toxic materials in aquariums. The POLY-FILTER is non-toxic and harmless to biological filtration, providing a means to remove excess ammonia while allowing enough to sustain bacterial culture. It changes color based on the contaminants removed, indicating its effectiveness.
