Great Aquariums Start Here
1-800-566-3474
    Free Shipping On $175+
  • FREE Shipping On $175+
  • 14-Day Low Price Guarantee
  • 14-Day Low Price Guarantee
  • Same Day Shipping
  • Same Day Shipping
FREE Shipping on Orders Over $175
FREE Shipping on
Orders Over $175
Standard ground shipping (1-7 business days) starts at a low $5.99 and most orders over $175 ship FREE. Learn More
14-Day Low Price Guarantee
If you find a product we sell for a lower price at another online store, we will match their price—today and up to 14 days after you've purchased the item! Learn More
Same Day Shipping
Same Day Shipping
We promise to ship your order as fast as humanly possible. In fact, 99% of orders placed before 6 pm EST ship the same day! Learn More
0
Your cart is currently empty.
Home » Saltwater Aquarium Supplies  » Overflow Box  » External Boxes  »  CPR CS Overflow Boxes
CPR CS Overflow Boxes

CPR CS Overflow Boxes

Item #:
Please make a selection
Size:
Quantity:
$90.49 to $155.99
Marine Depot 60-day Returns
At Marine Depot, we stand behind our products. That is why we offer a 60-day return period: one of the best in the industry! Learn More

CPR CS Overflow Boxes Information


Product Manuals & Documentation

Feature(s):
  • For glass or acrylic aquariums up to 60 gal.
  • Flow rate 300 GPH.
  • 6.5" wide
  • 3/4" bulkhead outflow
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.
Tip: We recomond the use of an Aqua Lifter pump with the CPR overflows for trouble free operation. Another alternative is to hook the bleed hose from the overflow to the air intake of a power head. This way the overflow will continue to wok if it drawes some air into it or in the event of a power failure it will restart.



Specifications

  • Flow rate 300 GPH.
  • 6.5" wide
  • 3/4" bulkhead outflow

What's in the Box

  • overflow box
  • overflow screen
  • 3/4" bulkhead
  • 3/4" slip strainer
  • foam ring for drain
  • air release tube for drain


Manufacturer Info

CPR Aquatic Aquarium Supplies
In Arcata, located in Northern California, the sea is a way of life. From the advanced Marine Biology department at Humboldt State University, just up the hill from CPR’s headquarters, to Humboldt Bay, about a mile west, CPR is nestled in a perfect environment to develop equipment for marine aquariums. CPR was started in a small garage in 1987 to produce biological filters for local aquarists. People who used CPR filters were impressed by the high quality and affordable prices. Word spread and the company grew. Since then, CPR has expanded to a 10,000 sq. ft. production facility and has developed many innovative products over the years. CPR is incorporating new ideas and technologies all the time. Their goal is to allow aquarists to place the highest performing products in their tanks at reasonable prices.

Warranty

180 day manufacturer warranty.  All warranty services are provided by CPR

+ Display More

CPR CS Overflow Boxes Reviews



Average Rating
(135 reviews)
Sort Reviews By:
of 14
Page


Really?!

by
Reviewers Rating Average


Posted: 5/9/2014 from BLAINE, WA UNITED STATES
2.5 5
Experience Level: Intermediate


Comments: The cs50 does NOT come with ANY way of connecting the tubing to the unit. It's a nice overflow, but a headache to deal with. Won't purchase from this manufacturer again.


1 of 1 People found this review helpful, did you? Yes No




Needs a dosing pump

by
Reviewers Rating Great


Posted: 4/9/2014 from CONCORD, NC UNITED STATES
4.0 5
Experience Level: Intermediate


Comments: I finally installed this overflow on my system and I do like it better than the U-tube design I had previously. The only downfall is that you will need a pump to keep the air bubble from appearing in the overflow area.


Did you find this review helpful? Yes No




Perfect

by
Reviewers Rating Excellent!


Posted: 4/3/2014 from SPRINGFIELD, OH UNITED STATES
5.0 5
Experience Level: Intermediate


Comments: This overflow is the best you can buy! You need the aqualifter pump with it so do not try to use it without it. Hook it up turn on the pump and your moving water. I do not want to drill my tanks and this was my best option.


1 of 1 People found this review helpful, did you? Yes No




overflow box

by
Reviewers Rating Excellent!


Posted: 3/27/2014 from VACHERIE, LA UNITED STATES
5.0 5
Experience Level: Beginner


Comments: Love it


Did you find this review helpful? Yes No




Hate!!

by
Reviewers Rating Unsatisfactory


Posted: 3/26/2014 from North Wilkesboro, NC UNITED ST
0.5 5
Experience Level: Expert


Comments: I hate this box and the tom's aqua lift. I will never buy another one that doesn't have U tubes in it. Put this CPR overflow box with toms aqua lift on my 125 gallon reef tank. When I set my two mp40's on in wave mode the movement of the water is to much for this style box. It's always getting air in it and stops the overflow. I took a double U tube box off a tank I'm not using tonight and now I can run my mp40s wide open without lose of suction. I give the CPR overflow box and toms aqua lift the worst two thumbs down I can. Don't buy either of these if you plan on upgrading to a wavemaker. Bty even without the wavemaker you still can't trust the toms aqua lift to not stop working while your away from home, so beware that you might come home to a wet floor one day.


1 of 6 People found this review helpful, did you? Yes No




Ugh!

by
Reviewers Rating Unsatisfactory


Posted: 2/16/2014 from ROCKAWAY PARK, NY UNITED STATE
0.5 5
Experience Level: Expert


Comments: Hate isn't a strong enough word for how I feel about this product. No matter what the height, flow rate, adjustment of air tube or removal of air in the top of the chamber, this is the noisiest overflow box ever made. It sounds like Niagra falls in my living room and I cannot get it to stop, no matter what I change. I don't even enjoy my reef anymore and it's solely because of this box. DO NOT waste your money on this garbage. Wish I never bought it.


1 of 7 People found this review helpful, did you? Yes No




Works great

by
Reviewers Rating Excellent!


Posted: 2/12/2014 from SARATOGA, CA UNITED STATES
5.0 5
Experience Level: Intermediate


Comments: I have this on an older 70 gallon tank that didn't have a builtin drain.


0 of 3 People found this review helpful, did you? Yes No




Workable Product

by
Reviewers Rating Excellent!


Posted: 1/26/2014 from REDMOND, WA UNITED STATES
5.0 5
Experience Level: Expert


Comments: I am using this overflow on my homemade drip filter and works fine. The only issue is debris from the tank either getting caught in the intake or on the sponge.


1 of 1 People found this review helpful, did you? Yes No




Hard to clean

by
Reviewers Rating Great


Posted: 1/21/2014 from NORTH BEACH, MD UNITED STATES
4.0 5
Experience Level: Intermediate


Comments: Box works well. MUST USE some type of syphon pump. Only problem I've found is difficulty in cleaning the very top inside. Would be nice if box came with flexible brush or comparable cleaning tool. But over all.... Best overflow box I've used.


Did you find this review helpful? Yes No




cpr overflow box

by
Reviewers Rating Great


Posted: 12/12/2013 from NEWARK, DE UNITED STATES
4.0 5
Experience Level: Intermediate


Comments: I like it but did not like the fact that you need a somekind of pump to pri m the thing


Did you find this review helpful? Yes No


of 14
Page
CPR CS Overflow Boxes Window Navigation Prev Next Zoom Close
We value your opinion & experience
Thank you for taking the time to review our products!

This is a Product Review for: CPR CS Overflow Boxes

First tell us about yourself.

Name to display on the review: Location (ex: Anaheim, CA):
Your experience level:


How would you rate this product?

Review Title:


Write your review:
(Please focus on product quality and performance, maximum 2000 characters)

This item is temporarily unavailable but will be back in stock soon.

Item #
Price:
Click the Add To Cart button below if you'd like to reserve this item today. Any other items included in your order will be immediately processed and shipped. We will ship this item separately as soon as it arrives. We will not charge you for this item until it ships and you will incur no additional shipping charges.

Enter your email address in the field below and click the Notify Me button if you'd like us to send you an email when this item becomes available. Although you will be immediately notified when we have stock on hand, we will not reserve any units for you; you must return to our website and place an order.

Your Email:
Just enter your email address below and we'll let you know when the product you are looking for becomes available!

Item Code:
Price:
Your Email:
If you find a product we sell for a lower price at another online store, we will match their price—today and up to 14 days after you’ve purchased the item!

Enter the price, shipping cost and website address where you found the lower price. Then click the "Add to Cart" button. We will review the lower price while processing your order and make any necessary reductions before your order ships. Some restrictions apply. See Terms & Conditions.

Sorry! While there is no limit to the number of items we'll price match in an order, our online system will only accept one. Please call us at 1-800-566-FISH (3474) and we’ll happily price match additional items for you.

Price *
Shipping Cost *
Competitor's Website *

Sharing products with friends and family couldn’t be easier!

Just complete the fields below to send your friend or family member a personalized email message featuring the product of your choice.

Your Name *

Friend's Name *

Friend's Email *

Personal Message

Please make a selection 
Add to Wish List
Select Wish List:
Comments (up to 200 characters):
Quantity Desired:
Quantity Received:
Priority:
Email Specials
Subscribe to our newsletter feed.
Newsletter Tips & Tricks! New Products!
Discounts & Promos!
Testimonials
July 21, 2014
"Excellent service and quick delivery. Will continue to do business with Marine Depot."
holguinsauto

July 19, 2014
"I appreciate Marine Depot's price matching. Keeps me coming back to them with my business."
Davileet

July 17, 2014
"Support quickly answered questions I had and the product was quickly shipped. I would definitely order from them again."
scott_hout