Overflow Boxes

Overflow Boxes

Aquarium Overflow Boxes

A built-in aquarium overflow box is the most efficient method of draining aquarium water to a filter. If your aquarium does not have built-in overflow, CPR Continuous Siphon Overflows/Prefilters 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.

The advantages of CPR Continuous Siphon Overflows/Prefilters include:

  • Adjustable water level allows you to easily change the level in your tank.
  • Black top reduces algae growth.
  • Plastic screen to prevent fish loss.
  • Quiet operation.

We highly recommend using the Aqualifter pump, available on this page, with your CPR Overflow.

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Overflow Boxes @ Fish Tanks Direct

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