Skimz Monzter CM113 DUO Internal Calcium Reactor

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Skimz Monzter CM113 DUO Internal Calcium Reactor

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SKU: 209433
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Quick Overview

Skimz has now introduced their mini calcium reactor line with the Monzter CM113 Duo internal calcium reactor. With most standard calcium reactors you will need a dedicated feed pump which can malfunction and clog causing inconsistent flow rates through the reactor. With the CM113 Duo reactor the circulation pump does double duty as a feed pump making adjustments that much easier. With a specially designed inlet to the reactor fresh tank water is pulled into the reactor at the rate the effluent is allowed to exit while recirculating the water within the reactor to contact as much reactor media as possible. With the DC pump the RPM of the pump can be controlled for fine tuning.


  • Pump: Controllable Skimz VSC1200DC

  • Power consumption: 12W

  • Media: 2,000 mL (8 cups)

  • Method of feeding: Self-suction water intake

  • For Aquariums up to 200 gallons

  • Includes pH probe holder

  • Includes Bubble Counter


  • L 6.1" x W 6.1" x H 19.3"

  • Reactor body diameter: 4.3 Inch



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Product Questions

Is the pump serviceable? Looks like it is glued in.
Question by: Chris Gillespie on Jan 26, 2016 3:47:00 PM
Great question!
This pump is able to be removed from the top down with removal of the plates. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Feb 3, 2016 3:07:00 PM

Full Details

Owners Manual


The Skimz Monzter CM113 is a small calcium reactor packed full of features. With a built in pH probe holder; bubble counter,easy to use fittings, and an integrated feed and recirculation pump these are one of the most economical and compact reactors on the market today.


Calcium reactors replace the trace elements consumed by corals as they build their calcium carbonate structure. Typical calcium reactor media is made up of skeletonized coral fragments that will break down at lower pH levels. The calcium reactor will require CO2 to be injected into the reactor by the means of a regulator and solenoid (sold separately). The CO2 then go through the bubble counter to visually monitor how much CO2 is being allowed into the calcium reactor to lower the pH of the water within the reactor. The low pH will allow the media to be broken down into the trace elements that make up the skeletonized corals concentrating the recirculating water within the reactor. The effluent leaving the reactor will have a very high concentration of the dissolved trace elements from the media, as well as a low pH. The pH within the calcium reactor should be monitored as well as the effluent coming out of the reactor. Too low of a pH or too much effluent coming out of the calcium reactor can cause low pH within the reef tank.



1 Item

  • Good quality By Blue on 2/26/2016

    Just taking a break from trying to reinstall the top cover after filling with media. It is incredibly frustrating to install while making sure the o-ring is seated correctly. The design requires a third hand. However, overall quality is quite good for the price. I would rate higher if o-ring placement was better designed. Back to getting this thing online. Glad it's done infrequently.