This is an all-in-one external canister filter for any freshwater or marine aquarium. Great for freshwater planted aquariums. Includes all the parts, media, and accessories you need right out of the box. No extra parts needed. The CFS 130 is a three stage filtration system that removes debris and wastes for crystal clear water. Includes filter pad, sponge, and bio ball media. Flow rate is 120 GPH and will work with 30 to 40 gallon aquariums.