CPR Aquatic CS90 Deluxe Siphon Overflow w/ Lid & Aqua Lifter Pump [Misc.]
A built-in overflow is the most efficient method of draining aquarium water to a filter. If your aquarium does not have built-in overflow, CPR Aquatic Siphon Overflows are the best means for getting water from an aquarium to a filter system without expensive modifications to the tank. They quietly skim up to six times more water than units with tubes.