Designed to deliver the highest water quality possible with maximum versatility and ease of use. Tidal™ Power Filters are designed from the ground up to provide your aquarium with high-quality, comprehensive filtration. They are easy to use and adaptable to a variety of aquarium conditions. With a host of features including a self-priming pump, dual water intake with surface skimmer, adjustable flow, maintenance monitor, self-cleaning impeller, and a filter basket that holds any kind of filtration media - and more of it - Tidal™ Power Filters are designed to deliver the highest water quality possible with maximum versatility and ease of use. Package Contents: Tidal 55 Filter, Heater holder, Telescoping intake pipe, Leveling dial, Foam filter, Matrix™ bio-media, Instruction Manual.