Pack of 8 Filter Sponges, 25 PPI, Biological Foam, Cuttable, For Freshwater and Saltwater Aquariums

Optimize your aquarium's filtration with this set of 8 filter sponges. With a precise density of 25 PPI, this bio-foam ensures an ideal balance between mechanical and biological filtration. The open structure allows for a constant water flow while retaining debris. Each filter sponge can be cut to fit various internal filters. Made from fish-safe material, it promotes the growth of beneficial bacteria for crystal-clear water. Quantity: 8 units Density: 25 PPI (pores per inch) Dimensions: 7.5 x 3.5 x 2.4 cm Material: Non-toxic synthetic foam Compatibility: Freshwater aquariums, saltwater aquariums, shrimp tanks

The 25 PPI density provides a perfect balance between waste retention and maintaining optimal water flow to protect your filter pump from premature clogging.

Extended three-dimensional internal surface area provides an ideal substrate for beneficial bacteria that break down harmful ammonia and nitrites. Pack contains 8 filter sponges measuring 7.5 x 3.5 x 2.4 cm, easily cut with scissors for a custom fit in any filter chamber. Made of durable, non-toxic foam with no chemical residue, ensuring the safety of your fish in freshwater, saltwater, or pond aquariums. Simplified maintenance thanks to clogging resistance: simply rinse the sponge in aquarium water to preserve the existing bacterial flora.