Zoo Med Turtle Clean External Canister Filter, 50-Gallon External canister filter with slimline design for tight spaces 200 gallon per hour rating, ideal for turtle habitats up to 50 gallons in size The included spray bar increases oxygenation to help support your turtles' health Double filtering system with both carbon and ceramic filters and internal biological recirculation Combines mechanical, biological, and chemical filtration to give your pets the cleanest, healthiest habitat