DESC: PetBlvd.com offers: Provides quality three stage filtration - removing debris, discoloration, odors and ammonia from the terrarium. The design allows for operation in shallow water environments, making it ideal for creating waterfalls. A top lid keeps reptiles out of the filter chamber, while providing easy access for replacing filter cartridges. Pumps 90 gph, filters up to 20 gallon aquatic terrariums