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 - 30 of 42 results
Page 1 of 2 Page 12movenext
Aqueon Overflow Accessory Kit
Aqueon Overflow Accessory Kit
Your Price $59.99
ratingratingratingratingrating
More Info on Aqueon Overflow Accessory Kit
Eshopps Eclipse L Overflow Box
Your Price $179.99
More Info on Eshopps Eclipse L Overflow Box
Eshopps Eclipse M Overflow Box
Your Price $159.99
More Info on Eshopps Eclipse M Overflow Box
Eshopps Eclipse S Overflow Box
Your Price $139.99
More Info on Eshopps Eclipse S Overflow Box
EShopps PF-1800 Overflow Box
EShopps PF-1800 Overflow Box
Your Price $123.49
free shipping
More Info on EShopps PF-1800 Overflow Box
EShopps PF-800 Overflow Box
EShopps PF-800 Overflow Box
Your Price $118.99
More Info on EShopps PF-800 Overflow Box
EShopps PF-1200 Overflow Box
EShopps PF-1200 Overflow Box
Your Price $113.99
free shipping
More Info on EShopps PF-1200 Overflow Box
EShopps PF-300 Overflow Box
EShopps PF-300 Overflow Box
Your Price $83.59
More Info on EShopps PF-300 Overflow Box
EShopps PF-Nano Overflow Box
EShopps PF-Nano Overflow Box
Your Price $73.14
More Info on EShopps PF-Nano Overflow Box
Page 1 of 2 Page 12movenext