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 Overflow 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. You may also want to look at our Wet Dry Filterpage where we have recommended packages including the Siphon Overflow, Aqua Lifter pump, return pump, Wet Dry Filter and plumbing.

Max. Flow Rate: 800 gph

Outflow Size: 1" bulkhead

Bulkhead Width: 10"

Quiet operation

Grated overflow