TOTAL FILTRATION IN ONE UNIT! Introducing the latest in modular filtration technology. The Marine Tower can easily be used in a berlin or refugium set up, and brings together protein skimming, mechanical and chemical filtration in one unit. The unit has an in-sump design with three separate sections to help create customized filtration systems and to utilize several types of filter media.


  • Protein Skimmer with efficient needle wheel powerhead
  • Mechanical filtration with included 4" filter sock with integrated sock holder
  • Triple-layer media chamber for use with chemical, mechanical or biological media
  • Compact size to fit into your existing sump
  • Modular application to easily create a Berlin or refugium set up
  • Hand-crated in the USA with the highest quality acrylic

-Dimensions 10 1/2"L x 9 1/2"W x 24 1/4"H
-27"H needed to remove collection cup.


CPR is pleased to announce the newest protein skimmer in the popular SR Series, the SR3. The SR3 is an in-sump skimmer that features a newly designed baffle system. Its narrow footprint is perfect for small sump spaces including the Bio-Cube 29 tank by Oceanic*. The SR3 is NOW available. Ask your local retailer about availablity!

-Includes side mounted venturi pump to fit into confined spaces.

-Dual return chamber and underwater return to effectively remove excess bubbles.

-Simple skimmer adjustment using CPR's collection cup assembly and O-ring support.

- * Easily slides inside of the Oceanic BioCube 29 sump area; fits in the middle chamber of the sump section of the BioCube 29 without any modifications. The lid closes as originally manufactured and the collection cup can be easily removed for cleaning through the rear access hatch.

-Dimensions 8 5/8"L x 2 7/8"W x 14 3/8"H
-19"H needed to remove collection cup.

DX and SR Series Protein Skimmers

Of all the various filtration methods available to the marine aquarist, only protein skimming removes most organic from the system before they break down into toxic ammonia and nitrite compounds. CPR uses proven Rejuventation Venturi Technology (RVT) in its various protein skimmers which use air and water injection to efficiently remove excess organics.

Some of the compounds a CPR protein skimmer removes are: soluble proteins, amino acids, organic dyes, fatty acids, carbohydrates, enzymes, detergents, some metal ions, iodine, phosphorus, algae cells, protozoa, bacteria and tiny particles of detritus.

All skimmers are produced with high grade acrylic which allows for the use of ozone without discoloration or damage. Each skimmer includes RVT powerhead for operation and have removable collection cups for easy cleaning.

The SR2 model is available in two configurations: Standard(left) and Side Mount(right). Footprint dimensions for the SR3 and the SR2's include pump in position.


  • Proven Rejuvenation Venturi Technology
  • Plumb inside or outside of a sump
  • Larger volume base; small footprint
  • Reinforced joints and recessed column construction for added strength
  • Deluxe option includes filter sock holder(FSH) and filter sock for skimmer outlet


Product Code: CMT

Product Code: SR3

Product Code: SR 91, 61, 41

Product Code: DX6

Product Code: SR2


Recommended Tank Size

up to 60 gallons
6 1/2" x 6 1/2"
up to 60 gallons
10 1/2" x 3"
Dependent on bio-load
8 5/8" x 2 7/8"
14 3/8"-19"
up to 120 gallons
7 7/8" x 4 5/8"
up to 300 gallons
10 1/4" x 7"
up to 600 gallons
10 1/4" x 6 7/8"
up to 160 gallons
10 1/2" x 9 1/2"
24 1/4"
up to 120 gallons
20 1/2" x 6 1/2"


Click here to download a copy of the set-up instructions

return to the products page