Penn Plax Cascade Internal Filter for Aquariums

The Penn-Plax Cascade Internal Filter by Penn Plax is designed for better filtration and aeration above and below the surface! The spray bar distributes water evenly over the waters surface to aid in aeration for healthier, cleaner aquarium water. Efficient chemical and biological aquarium filtration Removes harmful toxins, odors, discoloration and more Spray bar provides essential aeration for healthier environment The Cascade Internal Filter provides crystal clear water for freshwater and marine aquariums, and is great for aquatic terrariums too. Activated carbon cartridge media is included for efficient chemical filtration of harmful chemicals, toxins, odors, discoloration and other contaminants. The carbon cartridge is easy to replace for simple maintenance. The internal sponge optimizes colonization of beneficial aerobic bacteria, which remove ammonia and nitrates for safe, healthy water. A large capacity internal filter cup lets you choose your own filter medium as well.The pump