Acurel Cut to Fit Nitrate Reducing Filter Media Pad Grey 18 in x 10 in

"High aquarium nitrate levels can cause a variety of issues for your fish including increased stress, lower immunity, decreased ability to reproduce, and promotes algae growth. Acurel Nitrate Reducing Media Pads will maintain safe nitrate levels in your aquarium or pond water, ultimately helping to increase your fish's life span. Like all our infused media pads, our long-lasting polyfiber material is up to twice as thick and is much more rigid than competing pads, enabling them to fit tighter, hold their shape longer, filter more effectively, and last longer. To Use: Our Media Pads can be used in fresh or saltwater aquariums or ponds. They can be cut to fit any aquarium or pond filtration unit including hang-on filters, canister filters, top filters, internal filters, wet/dry filters and more."