CPR CMB 500 Wet/Dry Filter Package

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CPR Wet / Dry Filters CPR CMB 500 includes CR 500 and CS 50 overflow and hose kit.

CR 500:

  • Recommended for aquariums up to 60 gal. Includes two gallons of filter media.
  • Overall size: 16" x 8" X 12"
  • Inlet / Outlet: 3/4" / None
CS 50:
  • 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.
  • Plastic screen to prevent fish loss.
  • Quiet operation.

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.



Experience Level: Intermediate


The wet dry filter is fantastic. Have a well stocked (they breed like rabbits) 50g cichlid tank. The water stays crystal clear, the fish are all healthy, and the filter replacement is cheap. Definatly reccomend getting this system. The upfront cost is higher than a typical HoB filter but not having pay 8 dollars a cartrige once a month really makes it much cheaper in the long run. Only complaint is that the lid is kind of hard to get off in tight compartments. If you have a tall stand or are putting the sump on the side of the tank then its a non issue.

1 out of 1 found this review helpful

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Experience Level: Intermediate

Quality Product

This is a good product. Very well built. If you buy the kit designed for up to a 60 gallon tank, you might not actually get a funtional kit when it is purchased. The hose going from the overflow to the sump will not fit the connectors, so out of the box, the kit cannot function. You need to spend an addition 15 dollars on a sister site of CPR to find the adapters and have them shipped to you. The bad thing is, you dont know these adapters are needed until you read the instructions with the kit. The quality of the product is outstanding. Whether the product can actually be considered a "kit" is another thing as the word "kit" implies that additional parts will not needed once it has been delivered. I would have given this a MUCH higher rating if it was shipped as a true "kit". To put it in a different prospective, if you buy a model airplane "kit"...one wouldn't assume you have to buy the wings seperately.

22 out of 24 found this review helpful

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Experience Level: Intermediate

Built well, made to last

I bought this because i wanted to change my filtration method, Thick plastic includes everything you need, space for protein skimmer and heater. I like it.

2 out of 3 found this review helpful

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Eric G from

Great little product!

This is a great little product. Works well, and good manufacturing quality. No complaints here.

5 out of 7 found this review helpful

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