847-775-0640 Call us M-F 9-5:30 CST

CPR CS90 Aquarium Overflow Box

Product code: 27

Be the first to review this product

Availability: In stock

Ships today if ordered in the next 2 hours and 57 minutes!

Reward Points Policy Earn 6,497 AQUAPOINTS


CPR CS90 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: CS90
  • Flow Rate: 600gph
  • Outflow Size: 1" Bulkhead



  • (1) Overflow body
  • (1) Screen and sponge
  • (1) Vent tube with small “O” ring
  • (1) Bulkhead assembly
  • (3) Adjustment screws
  • (1) Air line
  • (1) Aqua Lifter pump and Acrylic Lid (included in Deluxe models)


Questions on CPR CS90 Aquarium Overflow Box

No questions asked yet

Ask Your Own Question

Write Your Own Review

You're reviewing: CPR CS90 Aquarium Overflow Box

How do you rate this product? *

Product Rating: 1 stars 2 stars 3 stars 4 stars 5 stars
129.95 In stock