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Bulkhead Mount Overflow Box Surface Skimmer by CPR

Bulkhead Mount Overflow Box Surface Skimmer by CPR

$ 27.75

CPR Bulkhead Mount surface skimming Overflow Box for an Aquarium

  • Flow rate is determined by the bulkhead you use. 
  • High-Quality Black Acrylic
  • 5 sided, ready for a hole for a bulkhead
  • Clean grate, CNC machined
  • High Quality, Hand Crafted by CPR in the USA
  • Install by using a bulkhead. Make sure you place a bulkhead gasket between the overflow box and the aquarium. 

Available in 5 sizes:

  • RSS05DX: 6.25" x 2.5" x 3.7", 800 GPH, up to 40 gallon Tanks
  • RSS07DX: 5.5" x 3.5" x 5", 1000 GPH, up to 60 gallon Tanks
  • RSS12DX: 7" x 4.25" x 5.25", 1500 GPH, up to 120 gallon Tanks
  • RSS18DX: 12.5" x 4.25" x 5.25", 1700 GPH, up to 200 gallon Tanks
  • RSS24DX: 18.5" x 4.25" x 5.25", 2000 GPH, up to 300 gallon Tanks


These units do not have holes; you will need to drill a hole as per your need.

Hole sizes for the bulkheads:

  • 3/4" Bulkhead: 1.5" (38 mm) Diameter
  • 1" Bulkhead: 1.75" (45 mm) Diameter
  • 1 1/4" Bulkhead: 2" (50 mm) Diameter
  • 1 1/2" Bulkhead: 2 3/8" (60 mm) Diameter

** If you do not have experience drilling a hole on an aquarium, please go to "youtube" and search for "drilling holes on glass Aquarium". There are many informative videos that will help your projects.

Please consider flow rate requirement before choosing bulkhead size:

 

Assume Gravity to Low Pressure

Bulkhead size

GPM
(with minimal pressure loss & noise)

GPH
(with minimal pressure loss & noise)

1/2"

7 gpm

420 gph

3/4"

11 gpm

660 gph

1"

16 gpm

960 gph

1.25"

25 gpm

1,500 gph

1.5"

35 gpm

2100 gph

2"

55 gpm

3300 gph

2.5"

80 gpm

4800 gph

3"

140 gpm

8400 gph

 

*These rates are with no restrictions such as elbows, valves, sponges and slip screen. 60 to 70% of above rates are average practical flow rate in Aquarium set up.


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