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CPR CS202 Aquarium Overflow Box

Product code: 31

Availability: In stock

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CPR CS202 Aquarium Overflow Box

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. 
  • Quiet operation. 
  • CS Overflows feature a grated inlet.


  • Model: CS202
  • Flow Rate: 1500gph
  • Outflow Size: Two 1" Bulkhead


Questions on CPR CS202 Aquarium Overflow Box

  • From Jimmy at 12/21/2017 8:46 AM
    • Will a mag 12 pump work with this set up?
    • Jimmy,
      CS202 will be too big for this pump. CS102 will be a better fit.
    • Do you find this question helpful?  Yes   No

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  1. it is good but best? Review by cartoonist

    The product is really nice it doesn't make noise like it says and it does flow very well. I did have a problem with it on my tank which is an old Oceanic The intake side wasn't down far enough for my water level to be where I wanted it to be, so I had to cut down the intake side of the box. It wasn't hard to do but I still had to do it for it to work right on my tank. I would think that on tanks of today it works perfect. (Posted on 4/23/2009)

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219.95 In stock