Skimz Monzter SM122 External Protein Skimmer

Skimz Monzter SM122 External Protein Skimmer
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  • Skimz Monzter SM122 External Protein Skimmer
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Skimz Monzter SM122 External Protein Skimmer

50% Recommend this to a friend (1 of 2)

SKU: 208143

reg. $349.99

Special Price: $279.99

In Stock: 18
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Quick Overview

The Skimz E-Series SM122 External Protein Skimmer gives you high performance skimming at a great value.

  • Rated for tanks 53 - 198 gallons (200-750 Liters)

  • Air intake: 143 GPH (540 LPH), making it capable of handling a higher water throughput.

  • Low power consumption and high performance

  • Features a Skimz ES2000 Needlewheel Pump

  • Skimmer requires an additional feed pump of 211 GPH

BRS Recommended for tanks up to:

  • Heavy Bioload (Most Common) - 70 gallons

  • Medium Bioload - 90 gallons

  • Light Bioload - 120 gallons


Full Details

Skimz Manufacturer's Manual



  • Integrated cylindrical and cone shape chambers help reduce bubble bursting and surface agitation
  • Bubble Plate Design - reduces turbulence
  • Maximum air flow capacity in compact design
  • Micro-adjustable valve for precise water level control
  • Twist-lock neck for easy collection cup removal
  • Quality construction - CNC machined parts and Georg Fischer fittings
  • Requires feed pump of 211 GPH (800 LPH)
  • 3/8" barbed feed input
  • 32mm metric PVC output*

*Metric to US plumbing adapters sold separately.


Skimmer Specifications:

  • Body Diameter: 4.72" (120mm)
  • Foot Print: 6.93” x 11.42” (176mm x 290mm)
  • Total Height: 22.83” (580mm)
  • Cup Diameter: 150mm


ES2000 Needlewheel Pump Features:

  • Skimz worked with an Italian pump manufacturer, using advanced material for the needlewheel impeller, seamless-coated rare earth magnet for durability and high performance.
  • Air Draw: 143 GPH (540 LPH)
  • Power Consumption: 12 Watts


Skimz Warranty

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


2 Items

  • Terrible terrible pump By Shaoxuan on 12/23/2016

    Buyer beware, just, don't. The pump that comes with this skimmer, Skimz ES2000, is out right horrible and render this skimmer super user unfriendly and brittle. Here is why:

    1. It's NOISY! It is the single noisiest equipment I ever used in my whole tank. Outright beat any other pumps combined. More speculate on the reason below.

    2. Its shaft is brittle and the propeller chamber is super hard to open. To open it up, you need to turn the size of the inlet lid to unlock it. But then you still need to squeeze it out because the rubble ring make it fit super tight (it's good in sense of prevent leaking), so it take non trivial force to take it out. Then the most terrible part is, the shaft is more attached to the lid than to the pump, which means there is a good chance the propeller will come out with lid. But remember you were trying pretty hard, squeezing it left and right to try open it, which means when the lid come loose, there is good chance it's going to the side. Imaging what will happen when the majority of the propeller is still in the pump body while the head of the shaft being twisted to the side. Yes, it breaks. I opened it up couple times in attempt to figure out the noise issue since getting it last month, and already managed to break two. And that's when the pump is brand new. I can't even imagine how hard it will be after running it for months when it's due for a clean. I might be better off just use it until it stops other than trying to clean it down the road, cause opening it up with built up inside is as good as destroying it.

    3. Then the last, the most subtle, but most impossible "feature": the inlet pipe/adapter part is NOT PERPENDICULAR to the lid! The angle is subtle, but it's definitely there. So that means the inlet pipe and the outlet pipe is not perpendicular. But the connector on the skimmer body is, so they don't really line up nicely, but instead slightly twisted and forced in place by the connectors. I think this is one of the reason the pump is so noisy. Also the lid can be install in every 90 degree, which means the inlet pipe and outlet pipe will get 4 different relative positions. So even if one of the position will lead to the correct line up of the pump and skimmer body, you will have no way to find out. (And remember, every time you try to open it and try a different position, you have another chance to break the shaft.) This "feature" is just intolerable!

    There are other minor things I can complain about: the air tube is too short, when the air inlet on the pump face the opposite side of the skimmer body (which is the position the first time I install it), it not long enough to reach the silencer than attached to the body. The adjustment dial is super loose and no lock, and I have to be extra careful even when removing collection cup to not accidentally turn it. Maybe I can tape it once settle down on a level. Those are really minor compares to the pump.

    So if you're looking to buy this very model, do yourself a favor, JUST DON'T. I would prefer to return it if it's an option.

    I really think BRS should stop carrying this very model for the sake of other reefers. Maybe until Skimz fix the problem with the pump, if they ever do...
  • Beast By BrianOH on 3/1/2016

    This is the most adjustable skimmer i have ever owned, No need to worry about sump water level and produced more skimate than i Knew was even in my tank. this should be called beast instead of monster, i am very happy with skimz look forward to other skimz products.


Ask a question

Product Questions

Hi. I just ordered an SM122 external for a new tank build. What feed pump would you recommend....would a Cobalt MJ900 work or should I consider something like a Sicce Syncra Silent 1.0? The tank is a 45G (48x18x12) with 21G sump/refugium that will be used short-term to get a head start on livestock for a larger display tank I'm building. Long-term it will probably serve as a frag tank. Thanks!
Question by: Jason Spacek on Apr 11, 2016 1:25:00 PM
Great question!
We would recommend the Sicce 1.0 if possible (slightly larger up to the 1.5 as well if you need to push the water a further distance) The sicce allows for easy plumbing using the included barb fittings with soft tubing or the female NPT adapter on the pump. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Apr 14, 2016 10:57:00 AM
I currently run a hob skimmer on my tank. I also am sumpless. If i install this on the floor behind the tank. Can the return water be pumped back into the tank. Top of the tank is about 5 feet from floor.
Question by: Scott Mikutel on May 13, 2016 9:23:00 AM
Great question!
In short, no. The water would simply fall down and pour out of the collection cup as the siphon is created.
Answer by: Connor (Admin) on May 17, 2016 6:53:00 PM
I'm thinking about upgrading my existing skimmer but I don't have enough space inside the sump to fit SM122 skimmer. My current setup consists of hang on back skimmer that is installed on the sump. The description of this skimmer indicates that it's external. Does that mean it can be installed outside of the sump, such as on the cabinet floor with a pump feeding the skimmer and output returning back to sump? Also is my existing MJ1200 pump good choice to feed this skimmer? Thanks!
Question by: Henry Limowski on Apr 21, 2016 3:08:00 PM
Great question!
This skimmer can be placed external next to the sump. You will the drain from the skimmer to flow back into the sump at the same height so the sump may need to be drilled if your sump is taller than 12" Otherwise the drain will simply lay over the top of the sump. The 1200 pump is more than adequate for the feed pump.
Answer by: Connor (Admin) on Apr 26, 2016 4:13:00 PM
How much clearance do you need to remove the waste cup?
Question by: Bill on May 18, 2016 8:44:00 PM
Great question! You will need about 2-3" of clearance to remove the cup.
Answer by: Carter (Admin) on May 24, 2016 11:35:00 AM