Overflow Boxes

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 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.

Displaying products 1 - 25 of 25 results
EShopps PF-800 Overflow Box
EShopps PF-800 Overflow Box
Your Price $118.99
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EShopps PF-1200 Overflow Box
EShopps PF-1200 Overflow Box
Your Price $113.99
free shipping
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EShopps PF-300 Overflow Box
EShopps PF-300 Overflow Box
Your Price $83.59
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EShopps PF-Nano Overflow Box
EShopps PF-Nano Overflow Box
Your Price $73.14
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Eshopps Square Large Foam
Eshopps Square Large Foam
Your Price $9.49
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EShopps Round Large Foam
EShopps Round Large Foam
Your Price $9.49
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Eshopps Square Small Foam
Eshopps Square Small Foam
Your Price $8.54
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EShopps Round Small Foam
EShopps Round Small Foam
Your Price $7.59
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