Sunsun Hw-303b Canister Filter with 9-Watt UV Sterilizer

Canister filters for aquariums use high water pressure from a properly powered pump to force water through the dense filter media. A pump can draw water from an under-gravel filter and run it into a canister for double filtration 3 media trays capable of handling your choice of filtration media; Comes with an adjustable spray bar. This is a helpful feature if you want to adjust the output flow from the filter Built in 9 Watt UV sterilizer to help kill algae spores and bacteria promoting crystal clear water Convenient self-priming pump that eliminates the need for manual siphoning; Single valve disconnect priming pump ease routine maintenance Provides quiet efficient filtration for fresh and saltwater aquariums is great for living rooms offices or bedrooms