Acurel Nitrate-Reducing Filtration Pad

Deep Blue Professional DB Nitrate Pad 18x10" Cut to fit media pads traps micro and macro organic particles, foreign debris, and excess fish food. For use in custom sumps/refugiums, hang-on filters, prefilter boxes, and more. Safe for both freshwater and marine aquaria.            Chemical & Mechanical  Dual stage filtration Safely reduces nitrate levels Promotes a healthy aquatic environment. New thicker, more rigid design for extended use.