Skimz Monzter CM152 External Calcium Reactor

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Discontinued by Bulk Reef Supply
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Maintain the calcium in your tank by adding a Skimz Monzter E-Series CM152 Calcium Reactor.

  • Rated for tanks up 396 gallons (1500 Liters)
  • Feed Rate: 132 - 264 GPH (500-1000 LPH)
  • Circulation Pump: Skimz E2800
  • Dual Stage Chambers
  • Power Consumption: 55W
  • Media Load: ~11.9 lbs (5.4kg)



  • Hand-crafted with high quality materials and precision CNC machined parts and Georg Fischer fittings
  • Recirculating design along with high efficiency pump helps to maximize the CO2 injected into reactor
  • Water Swirling Chamber (WSC) integrated into base to force water upward evenly - minimizing dead spots
  • Cone-Shaped Gas Channeling Chamber (GCC) at top of reactor helps channel undissolved CO2 to recirculate via the circulation pump
  • Space for pH probe
  • Easily fill additional media
  • Method of feeding: Feed pump or gravity


Reactor Specifications:

  • Body Diameter: 5.9" (150mm)
  • Holds roughly 11.9 pounds of media
  • Foot Print: 8.11” x 10.43” (206mm x 265mm)
  • Total Height: 22.05” (560mm)
  • Feed Inlet: 1/4" (6.35mm) polyethylene tubing

E2800 Pump Features:

  • Skimz worked with an Italian pump manufacturer, using advanced material for the impeller, seamless-coated rare earth magnet for durability and high performance.

Skimz Manufacturer's Manual

More Information
Media Capacity 4 Cups / 946mL, 5 Cups / 1183mL, 6 Cups / 1419mL, 7 Cups / 1656mL, 8 Cups / 1892mL
Reactor Placement External, In Sump
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Product Questions

will this be ok on a 180 gal sps dominant reef tank
Question by: Jared Gray on Jul 30, 2016, 4:02 PM
Hi there,
The size of the calcium reactor will heavily depend on the amount of coral and demand for calcium and alkalinity. When it comes to calcium reactors we always suggest going larger than what you may think you will need since a small calcium reactor can become very hard to manage in regards to pH. With that being said, you can always add a secondary chamber to help scrub any lingering CO2 if your corals start to outgrow your reactor, but with the CM152 it may be a while before that happens.
Answer by: Charlie on Aug 1, 2016, 9:16 AM