Skimz Monzter SM203 DC Internal Protein Skimmer

Skimz Monzter SM203 DC Series Protein Skimmer
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Skimz Monzter SM203 DC Internal Protein Skimmer

79% Recommend this to a friend (15 of 19)

SKU: 207996
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Quick Overview

The Skimz D-Series SM203 DC Internal Protein Skimmer gives you high performance skimming at a great value. Adjustable DC VSC5000 pump in housed within the skimmer body resulting in a compact design.

  • Manufacturer rated for tanks up to 528 gallons (2000 Liters)

  • BRS Recommended for tanks up to:

    • Heavy Bioload (Most Common) - 190 gallons

    • Medium Bioload - 240 gallons

    • Light Bioload - 320 gallons

  • Air intake: 238-476 GPH (900-1800 LPH)

  • Operating Depth: 7" to 9.5"

  • Low power consumption and high performance

  • Skimmer draws water directly from sump

  • Skimz VSC5000-DC Pump with 6 speeds and feed mode shut off


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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
  • Internal application - no feed pump required


Skimmer Specifications:

  • Base Diameter: 7.87" (200mm)
  • Foot Print: 9.21” x 9.21” (234mm x 234mm)
  • Total Height: 21.5” (545mm)
  • Cup Diameter: 200mm


VSC5000-DC Pump Features:

  • Six RPM presets
  • Feed mode with shut off timer
  • Air Draw: 238-476 GPH (900-1800 LPH)
  • Power Consumption: 13-35 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



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  • Good Skimmer By Tsteak on 8/30/2016

    I've only had this skimmer a couple weeks. The only negative is micro-bubbles, in my setup this is a big one; they need to incorporate an internal bubble trap of some kind, as a pretty large quantity escape. Other than that, it started pulling gunk immediately, and officially broke in after about a week. After break in I had to re-tune it, as it started skimming extremely wet. Now that its broken/braking in the bubbles in the neck seem to be getting finer every day, and it is skimming better and better. As long as the pump lasts, I'll be very happy with this skimmer.
  • Pump keeps this from being a great skimmer By Steve on 6/4/2016

    I purchased this skimmer from a LFS, through BRS in April 2015, as of today I am on my 3rd pump. First pump fluctuated all the time, levels rising and falling for no apparent reason. My first interaction with BRS on this was not very good was told lots of things to do but nothing resolved issue. In Feb, with different CS person, the pump was replaced. Worked great for 3 1/2 months then died. Again BRS replaced the pump, currently being shipped. So I am on my 3rd pump in less than 14 months. After initial contact customer service has been great. My concern is, am I going to receive another junk pump. When it is working correctly (which hasn't been often) this skimmer is really nice, pulls a ton of stuff from the water column and is extremely silent. The bottom line is without a good pump it is not a good skimmer.
  • Great quality skimmer By William on 5/8/2016

    I've had my 240 up and running for almost 10 years, and have probably been through 10 skimmer designs in that time. This skimmer is by far the best, easiest to maintain skimmer I have ever owned. Don't have a lot of room between the top of the sump and the stand? You can completely disassemble this skimmer and take it out in pieces for cleaning. It generates a ton of air, is easily set and adjusted, and the pump is completely silent. I couldn't be happier with this skimmer.
  • Excellent Control By Drukyulgoods on 1/9/2016

    This is the most flexible skimmer I've owned in my many years. I've replaced my Octopus Regal with this device and I am impressed daily. Having three points of control, (dc pump speed, needle air input, & input flow gate) allows one to finely tune the device. The amount of junk this thing pulls out of the water column is astonishing. Highly recommended.
  • Great value By jsbull on 1/2/2016

    I was lucky enough to get this on Black Friday. I figured I'd give it a shot since BRS picked a Skimz for their demo video tank. I also have a 9" deep sump and this is one of the only skimmer rated for that depth.

    It was working fine, but I ended up buying 2 1" Marinepure ceramic squares. They fit perfect under the Skimz and lift it up to a better operating depth.

    My tank has cycled and been running now for about a month. I only have 2 clowns, 3 firefish, a midas blenny and a handful of corals, but I get a great skimmate.

    As long as it is running, I'll be happy with it.
  • Skims like a Monster By Brain in a Vat on 12/19/2015

    Coming from a ASM G1X, nothing could prepare me for what my tank has been missing for so many years...a real skimmer. This puppy is pulling over 20 lpm of air. I'm getting tired of emptying the skimmer cup (which is enormous, btw). I'm very happy with it. Worth every penny. :D
  • New pump needed first day By Jason on 12/19/2015

    I recently purchased this skimmer on the black Friday sale. First I want to say BRS to this point has been amazing. The first day I got the skimmer I plugged it in and put it in the sump. Upon adding power I could immediately tell something wasn't right. Hardly any air in the water column. I adjusted it to let it break in. Within the first 24 hrs the motor/DC controller shut down. This is plugged directly into a wall with no controller and has constant power.

    BRS customer service had a new pump out to me the next day. I will update as soon as the new motor is received. It has been 11 days now and the package seems to be stuck in Chicago.

    But I want to make sure everyone understand BRS has been amazing thus far in their support.
  • Great product.... By Rad Perez on 12/14/2015

    This skimmer is just amazing once it's dialed in. It took several days to break in but once it did, Wow does it pull stuff out of the water. No instructions come with the skimmer on how to adjust settings but a quick look at YouTube and your good to go!
  • Pump is junk! By Ron on 8/28/2015

    Pump died after 13 months! I see I am not the only one with this problem. I have a bubble magus skimmer that's been running on the original pump for 5 years.
  • This skimmer is a Beast By Joe on 5/1/2015

    This is my first new skimmer I have purchased. It took a little time to tune in, but once it was it skims like a beast. Everything in my tank looks so much better now. Love this skimmer and would and have recommended it to everyone in my saltwater club.
  • Excellent with one exception By John on 3/27/2015

    I love everything about this skimmer except one little thing; Mine didn't come with instructions other than how to put it together. I have no idea what the controller does. This may be common sense to most people but this is my first internal skimmer in 10 years of reefing so I am learning as I go. On the plus side, it is super quiet. I will and have recommend Skimz products to a friend.
  • great product By Ol Crusty on 3/26/2015

    I've got this skimmer on my 250 gallon stocked fowlr tank. It was a tight fit in my sump but it did fit. The skimmer is super quite and it skims like a monster. Pretty much set and forget not a lot of tinkering. Pulls 3 times the stuff out compared to the skimmer it replaced.1