BAK-PAK™2

The 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. Water first enters the Protein Skimmer column from the aquarium and then flows through the biological chamber filled with Bio-Bale™ filtration media before returning to the aquarium.

BAK-PAK™ 2R+

CPR also offers a hang-on skimmer designed for reefkeepers, the BAK-PAK™ 2R+. This skimmer is designed for use on reef tanks where biological filtration is not necessary.

BAK-PAK™ Dual Pak

CPR has taken the proven technology behind the BAK-PAK™ 2, and created the larger BAK-PAK™ Dual Pak. The Dual Pak provides a complete hang-on filtration unit for tanks up to 100 gallons that incorporates two protein skimmers with a biological filtration chamber in the middle.

Model #	Aquarium Size	Dimenisons	Bio-Bale
BAK-PAK™2	Up to 60 gallons	7.5" wide, 3" deep, 17" height	Yes
BAK-PAK™ 2R+	Up to 60 gallons	7.5" wide, 3" deep, 17" height	No
BAK-PAK™ Dual	Up to 100 gallons	11.5" wide, 3.75" deep, 18" height	Yes

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