Multi-stage filter pumps out an astounding 925 gallons (3500 L) of water per hour Smart Pump™ – advanced microchip technology continuously monitors and optimizes pump performance Self-starting – just add water, plug in and Smart Pump™ will take over. Trapped air auto-evacuated every 12 hours to ensure maximum efficiency Easy water changes eliminate need to lift heavy buckets. Simply attach hosing to output (Kit sold separately) and Smart Pump™ does the rest Removable, stackable media baskets eliminate water bypass and hold a total of 1.5 gallons (5.9 L) of media All filter media included – mechanical, chemical and biological Aqua-Stop valves with leak-proof Click-Fit attachment system Valves positioned at convenient 45-degree angle for easy installation and rotation Anti-clog, telescopic strainer ensures continuous water flow Multi-Directional Output nozzles can be fully adjusted to create customized water flows Utility Valve with drain hose for easy maintenance and flushing of canister Rubberized feet help ensure quiet operation 21″ tall design – easily fits under most aquariums Made in Italy For use in freshwater and saltwater aquariums