CPR Aquatics CS50 Siphon Overflow [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 Aquatics 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. We highly recommend using the Aqua Lifter pump with your CPR Overflow to maintain siphon.