Poly Filter 'The Incomparable' 1 Pack

Poly-Bio-Marine Poly Filter Pad, 4 Inch X 8 Inch The Poly-Bio-Marine Poly Filters are a formulation of a special patented material bonded to a synthetic matrix. By means of a unique proprietary process, the Poly Filter is made impervious to salt and is also organic loving to certain materials. * The Poly Filter pads "Absorb" and "Adsorb" contaminants and other toxic materials found in nature or added to fresh and salt water with or without fish and invertebrates. * Medication added to aquariums for treatment of diseased fish will automatically be removed by the Poly Filter (after the medication serves its intended purpose). * It provides a supplemental means for removal of ammonia when the biological filter is unable to break down the excess ammonia. * The pads are placed in any filter in a place where chemical filtration media is intended (generally, after the larger sediment has been filtered out). * Changes color when exhausted.