Skimz Monzter ZM120 External Zeolith Reactor

Skimz Monzter ZM120 External Zeolith Reactor
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  • Skimz Monzter ZM120 External Zeolith Reactor
  • Skimz Monzter ZM120 External Zeolith Reactor Base
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  • Skimz Monzter ZM120 External Zeolith Reactor Chamber

Skimz Monzter ZM120 External Zeolith Reactor

75% Recommend this to a friend (3 of 4)

SKU: 208001

reg. $201.99

Special Price: $161.59

In Stock: 27
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Quick Overview

ZEOvit System Guide

Create ultra low nutrient environment in your system with the Skimz Monzter ZM120 Zeolith Reactor. This ultra low nutrient system closely mimics reef environments. Skimz Monzter Zeolith Reactor will allow you to better influence the water chemistry, which is vital to the growth and coloration of corals, especially SPS corals.

  • Rated for tanks up 264 gallons (1000 Liters)

  • Method of feeding: Pump

  • Feed Rate: 264-317 GPH (1000-1200 LPH)

  • Double chamber

  • External-use

  • Utilizes the nutrient processing traits of selective bacteria strains and a substrate facilitative to their metabolic needs.

Full Details


  • High precision CNC machined parts
  • Quality Georg Fischer pipe fittings
  • Functional design for reliable use
  • Dual chamber agitators to eliminate jams and reduce wear



  • Dimensions: 5.71" x 6.89" x 18.11" (145mm x 175mm x 460mm)
  • Body Diameter: 4.72" (120mm)
  • Feed Rate: 264-317 GPH (1000-1200 LPH)
  • 1/2" Barbed input


Probiotic methods (ultra low nutrient) require a good protein skimmer for effective use.


Skimz Warranty

  • Warranty for Original Purchaser against defective material and workmanship that occurs during normal use.
  • 2 Year Warranty on reactor body


4 Items

  • Leaks when you pump the media By Arringar on 5/7/2017

    It's a decent product but it leaks a bit of water at the top around the handle when you pump it, which is very annoying. It also gets salt creep around the top rim because there is no gasket/seal.
  • Solid reactor By Ryan on 12/8/2016

    I'd give it five stars but I have one issue. The description says it's 1 1/4 output so I went out and bought 1 1/4 fitting so I had them ready before the reactor arrived. Turns out it's a metric 40mm outlet. It comes with an elbow and a length or pipe so I just made it work until I found an adapter. Works well, other than that.
  • Well built, solid, and external By Zyvo on 4/15/2016

    Great reactor for those of us who wanted an external reactor to run Zeo. As Jeff said I think it holds just a bit over 1L of Zeo so not meant for larger systems obviously. Pretty easy to take apart and change out the media, very solid design, easy to pump (even my tiny fiance can do it while I am out of town).
  • Miss sized By Jeff on 2/20/2015

    Let me start off by saying that this is a very well built reactor and a great price! How ever skimz states that this reactor holds 2.5 l not even close more like 1.5 if lucky ! But how ever even after in use bulk reef steped in and exchanged for the zm150 I can't say enough for these guys !!!!! But all in all if u want a good reactor that is external then this is the one


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Product Questions

I'm going to be starting a ZEOvit system and I know that some equipment won't be needed such as GFO, with this system should I keep my biopelet reactor?
Question by: Brian Gaffka on Jun 1, 2016 12:42:00 PM
Great question,
you will not want Bio pellets to be running along side Zeovit. This will interfere with the program. Feel free to let us know if you have any further questions.
Answer by: Connor (Admin) on Jun 2, 2016 12:20:00 PM
I Can I place it inside of the sump right?
Question by: daniel Valderrama on May 8, 2016 1:03:00 PM
Correct, this can be run internal or external.
Answer by: Connor (Admin) on May 10, 2016 5:56:00 PM
Is there an instruction manual for this product? I can't find one anywhere.
Question by: Ryan Oconnell on Nov 30, 2015 11:08:00 AM
Great question!
There is not really an instructions manual available. You will connect a feed pump (Standard aquarium pump) around 200 - 300 GPH to the barb section and plumb the top part as the drain with standard PVC tubing back into the sump. If you would like feel free to give us a call if you have any installation questions!
Answer by: Connor (Admin) on Dec 7, 2015 7:12:00 PM
Which pump is recommended to use?
Brand and G/H
Question by: Felix Catano on Oct 27, 2017 9:18:00 AM
Hi Felix, thanks for reaching out!

Skimz recommends a feed rate of 264-317 GPH. I would recommend using the Syncra Silent 1.5 Pump (357 GPH) which will give you a little room for flow loss due to plumbing. You can also dial back the flow a bit with the built into adjustment if need be.
Answer by: Nick (Admin) on Nov 16, 2017 5:14:00 PM