Unique Bargains1 Pcs Aquarium Fish Tank Blue Bonded Filter Pad Floss Sponge 25" x 5" x 3/4"Category: Polyester Filter FlossProvides biological and chemical filtration and increase the oxygen solubility in aquarium and fish tank. Dense honeycomb shape makes it effective to avoid residue and reduce the death rate of fish.??Clean and reuse?Our bonded filter pad can be rinsed clean in a sink. Changing filter pads regularly will increase water quality by removing solid organic compounds before they continue to break down and add additional nutrients (which can increase algae growth) to the water in your fish tank.Cut to fitCan easily be cut to any size needed.?Better filtration and durable?Typically used as a pre-filter for wet/dry filters, sumps, and canister filters to clean water in freshwater, saltwater, reef aquariums and other types of fish tanks. They can also provide mechanical filtration in aquaponics systems, turtle tanks, terrariums promoting nitrogen cycle to reduce the death rate of fish.?For CALIFORNIA residents only: WARNING: This product contains chemicals including DEHP, which is known to the State of California to cause cancer and birth defects or other reproductive harm.Please note that by posting this Proposition 65 warning, we are notifying you that one or more of the Proposition 65 listed chemicals may be present in a product. With Unique Bargains' products, the exposure to these chemicals may be of no significant risk to you, but out of caution, we have elected to place this warning on our site to make sure our customers are informed.You can find more information at http://www.oehha.ca.gov/proposition-65/about-proposition-65.