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CPR Bak-Pak Protein Skimmer

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CPR

Cyclone BAK-PAK™ 2 Bio-Filter

The Cyclone BAK-PAK™2 Bio-Filter is the second generation external, hang on the back, combination Protein Skimmer and Biological Filtration unit from CPR. The BAK-PAK™ 2, like the original, is designed for tank sizes up to 60 gallons, but multiple units may be used for larger aquariums. Water first enters the Protein Skimmer column from the aquarium. It then flows through the biological chamber filled with Bio-Bale™ filtration media before returning to the aquarium.

The Protein Skimmer is driven by a rejuvenation venturi powerhead. Bubble dwell time is increased by the counter-current flow in the skimmer column. The quality of the foam collected can be controlled by raising and lowering the collection cup.

To set up the BAK-PAK™ 2, hang the unit behind the aquarium and plug it in, that`s it. New improved design incorporates an easy to clean intake tube and an enclosed, directional outflow to reduce salt splash and micro-bubbles entering into tank. The new design also uses a smoke colored break-resistant collection cup.

"A Marine Fish Monthly Product Review"
The Cyclone Bak-Pak incorporates a biological filter along with a very nice protein skimmer in one unit, which hangs on the back of your aquarium. No extra plumbing is required, in fact all you need to do is level unit with the adjustment screws provided in the unit.

For the purpose of our test, we installed the unit on a 55 gallon tank which was overloaded with animals, on purpose. This was done to fully test the unit. More animals were swimming in the tank than is recommended or you should ever have in your tank. Again, on purpose, we overfed the animals. Again, this was to fully put the unit through its paces.



After plugging the unit in, we lowered the protein skimmer collection cup lower than usual so we not only would get dry foam but capture some of the wet foam. Again, this was done on purpose to test the unit at a capacity far greater than it was rated. Immediately, we began to collect green water in the collection cup. It was necessary to empty the collection cup two or three times daily for a few days. All the while the water in the aquarium was becoming clearer. Finally, after about a week we raised the cup to the normal recommended level and continued to run the unit. We are now getting dry foam, and the water quality continues to improve. The water is clear and the fish seem more comfortable since the yellow has been removed.

The Cyclone Bak-Pak now has been on the 55 gallon tank for some two months. The water remains clear and the fish are healthy and swimming in normal patterns. A quick check proves the nitrites are well within the acceptable range and ammonia does not read with the test kit.

As mentioned the Bak-Pak incorporates a biological filter already filled with media and a protein skimmer, easily hung over the back of your tank. After testing we have concluded that this unit is ideal where the hobbyist does not want to do extra plumbing and add a lot of piping, extra pumps, etc. If you have a larger tank, simply add additional Bak-Pak units, one for each 60 gallons of aquarium water or portion of thereof.

Operation is very quiet, salt creep is kept to a minimum as the lip of the return port extends into the aquarium water, so there is no splash from water being returned to the tank. We can recommend this unit to any hobbyist who wants a clear tank and optimum water quality for his animals.

Skimmer body dimensions: 7.5" W X 3" D X 17" H
Overall dimensions: 7.5" W x 6.25" D x 19.5" H

Specifications

Skimmer body dimensions: 7.5" W X 3" D X 17" H
Overall dimensions: 7.5" W x 6.25" D x 19.5" H


Product Manuals & Documentation

CPR Bak-Pak Protein Skimmer

Additional Info 1 available for download in Adobe PDF file format

CPR Bak-Pak Protein Skimmer

Additional Info 2 available for download in Adobe PDF file format

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

66 Reviews

JOHN RYAN from BRECKENRIDGE, CO UNITED STATES

02/09/2016

Experience Level: Intermediate

Good bang for your buck

There are definitely better skimmers out there, and there are cheaper skimmers out there but this is a pretty good compromise if you want a good product but don't have deep pockets. Sets up easy, mine broke in quick. Producing well after only a couple days. The biggest knock is that it is a bit loud. But with minimal effort you can make a DYI silencer for the air intake and eliminate most of the noise. I also like that it doesn't occupy too much tank space compared to other hang on skimmers Ive had, as well as the simple design/look etc that all CPR products employ.

1 out of 1 found this review helpful

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LOU ALFONSO from Old Bridge, NJ UNITED STATES

01/31/2016

Experience Level: Intermediate

Bakpak

I had a skimmer that broke. So I did my homework and this one was the one that I picked, it was delivered on time and very very well packed! My water was cloudy, and I will admit after about an hour of having the Bak Pak running my water became clear, I've had it running for almost two weeks, my water is crystal clear, if my fish could? They would be smiling!! Highly recommend it!!!!

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MICHAEL MORETTI from NEPTUNE, NJ UNITED STATES

11/11/2014

Experience Level: Intermediate

Ggod news

Three days up and running and half a cup of skimmate this morning on my reef tank. No complaints

1 out of 2 found this review helpful

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MICHAEL SCHMIDT from BARBERTON, OH UNITED STATES

11/09/2014

Experience Level: Expert

Great Product

I purchased one of these for my 55 gallon tank and have to say I love it. The people who are reviewing this item poorly either have it improperly set up, or are not patient enough to wait for the break in period before reviewing. Mine took 3 weeks before producing any foam in the collection cup. Be patient! All skimmers have a break in period, this one does seem to be a bit longer then normal but it will work. It is a little louder then some of the competition, but it is also quite a bit less costly. The noise doesn't bother me, I actually find white noise helpful when I sleep. This is a great product and I would definitely recommend it to others.

3 out of 4 found this review helpful

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ADAM LAMBERT from SAINT PAUL, MN UNITED STATES

05/18/2014

Experience Level: Intermediate

Great skimmer

I know a lot of complain out how loud it is but i got to say i love it. I've had mine for 5 years and still works like brand new. I have my set up on my tank that i have in my bedroom. Again the noise is loud but personally when i listen to it before bed its like white noise and i personally get to sleep a lot faster. All in all its a great machine it does what its suppose to and does it well

6 out of 6 found this review helpful

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ERIC GOUDY from DEALE, MD UNITED STATES

01/16/2014

Experience Level: Intermediate

Works but is so LOUD!

I know people seem to really like this and I did notice that noise was mentioned but I didn't realize how loud it would actually be. I purchased this for a 45 gallon tank in my bedroom and had to remove it the 1st night. I moved it to my living room tank to use as a back up but my family complained. I would not advise anyone to buy this product, the only reason I gave it 2 stars was because it does work.

5 out of 6 found this review helpful

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CHRISTOPHER BAKER from FAIRFAX, VA UNITED STATES

01/08/2014

Experience Level: Intermediate

Can't Handle its own Weight

Works decently well as a skimmer, but after a year the weight of the water in it wears down the intake joint/ gasket and it begins to leak. Weight bears on the plastic support on the left side, but the intake on the right side. On my second and last one of these.

4 out of 6 found this review helpful

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DONALD CROSS from BRISTOL, VA UNITED STATES

10/26/2013

Experience Level: Expert

great

good design lives up to factory details

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MICHAEL BURDUCK from COOKEVILLE, TN UNITED STATES

08/17/2013

Experience Level: Beginner

Bak Pak 2

So far so good. I'm setting up my first marine tank and the skimmer seems to be working fine. Fairly quiet, too. I will update after more time passes.

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MIKE HUDSON from Lizella, GA UNITED STATES

08/14/2013

Experience Level: Expert

LOUD!!!!!!

Purchased, set it up, and only can run it while Im not home.. Extremely LOUD!!!! with the accela pump. CHECK ESHOPPS

2 out of 2 found this review helpful

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