One-of-a-kind, innovative "land and water" environment, combining decoration and top-of-theline fitration. Fits most 20- to 55-gallon aquariums. Realistic waterfall and riverbed basking area. 80-GPH submersible pump powers waterfall and provides all the power needed for the built-in 3-stage Whisper® filtration technology. Uses two medium ReptoFilter cartridges.