- Comline DOC Skimmer 9012 DC - Tunze
Why does BRS recommend this?
We have really liked the Tunze Comline skimmers due to their small form factor and their ability to adapt to many different systems. With AC pump and DC pump models available you can choose the skimmer that works best for your system.
Includes DC powered pump and controller for complete control.
Using the Tunze Flash Skimming Principle, the Comline DOC Skimmer pulls water through an efficient surface suction.
Heavy Bioload - 50 gallons
Medium Bioload - 150 gallons
Light Bioload - 260 gallons
- Skimmer Cup volume: .7 Liters
- Air capacity: 400 L/H (52 GPH)
- Magnet holder for up to 1/2" thick glass
- Quiet Operation
- Bubble free outgoing water
- Easy to remove collection cup
- Immersion depth: approx. 255mm to 285mm (10 to 11 in.)
- Power consumption: 13W, 230V/50Hz (115V/60Hz)
- Dimensions: L140 x W110 x H415mm (L5.5 x W4.3 x H16.3 in.)
The 9012 DC Skimmer now includes a DC powered pump and controller for ultimate control and tuning ability.
The Tunze Comline DOC skimmer utilizes Tunze's "Flash Skimming" principle. The skimmer is quiet and generates a very large volume of small bubbles for efficient skimmer operation. It operates stand-alone without needing any additional equipment (feed pumps, etc) and mounts to the tank via a convenient magnet holder strong enough for glass up to 1/2" thick.
The TUNZE® Foamer generates large volumes of fine air bubbles with a diameter between .0039 to .011 in. (0.1 to 0.3 mm) On the surface of the air bubbles, pollutants such as protein, cellulose, dead cells, etc. are adsorbed immediately. The water/air mixture expands and stabilizes in the skimmer cup reactor, the water returns to the aquarium, and the protein-loaded air bubbles spill over into the skimmer cup. The patented anti-overfoaming system intermediate chamber prevents the skimmer from over foaming and controls the skimmer performance, depending on the water level and organic load. This “flash skimming” principle, compared to large skimmers with long contact time, is obtained because the substances adsorbed by the air bubbles are not released again, thus they don‘t return to the aquarium water.
Great Skimmer By Cheri on 4/13/2020Cheri would recommend this product to a friendI have to say, I almost gave up on this skimmer. Bubbles, bubbles, everywhere. I checked, and rechecked, the body of the skimmer to make sure that it was seated properly, and it "appeared" that it was. After contacting Tunze support, I checked again, and discovered that it, in fact, was not snapped together properly. You really have to press it together firmly, more firmly than I thought safe, anyways. Since that day, it has been running great, no bubbles, and pulling out a lot of gunk. Other than that little hiccup, I'm very happy with it, and Tunze support. Fits perfectly in the rear chamber of an Innovative Marine SR80.
Great Skimmer. By Samuel on 6/18/2019Samuel would recommend this product to a friendSo I have run both the 9004 and 9012 DC version. First the 9004 in a NUVO 40 AIO then I upgraded To the 9012 when I setup the NUVO 120 AIO. Both skimmers are built very much the same with the exception of a much taller collection cup on the 9012. It sticks up about 1” which is not terrible. The black body and smoke/gray collection cup help it blend in which is important in an all in one setup. Unfortunately the drain line (called the “holiday cup” by Tunze) is not useable in the NUVO AIO tanks. This coupled with the wet skimmate this produces, means you’ll be emptying your cup and replacing tank water every 3-7 days.
These skimmers do skim wet. The neck will eventually get the sludge you’re looking for and the dark green water you pull is concentrated but vs traditional high end cone skimmers the Tunze definitely pulls out more water.
After the initial break in period (discussed below) this Skimmer is incredibly quiet. It is not dead silent due to the air intake and bubbles but it is by far the quietest Skimmer I’ve used- especially considering it’s not inside a cabinet.
This is not my favorite Skimmer to clean. It can be a little difficult to take apart and put back together. The fact that it is all black means you will need a regimented cleaning schedule because you can’t actually see when it’s dirty inside (and it will get dirty inside).
Install: The magnets are incredibly strong. I fully believe it would hold to 16mm+ glass. The rubber feet to connect
To the magnets are interesting and I’m guessing required to reduce noise (the 9004 apparently didn’t require them). Twice while I was adjusting the water height the rubber feet and magnets fell off. Good idea but tighter fitting rubber feet would be appreciated. Be careful sliding it up and down. This also means when you put the collection cup on you also need to be careful. It literally just sets on top. Pushing too hard can mess up your water height level or dislodge the rubber feet.
Break-in- You need to be prepared for a week or two break in period. If this is going in your display, prepare for massive bubbles during that time. I have found that if you leave the Skimmer running in a 1/3 vinegar 2/3 RO/DI mixture for 48-72 hours you will alleviate the break in period.
Adjusting- I have never been able to turn up either the 9004 or 9012 past 1/4 on the controller. I even have the 9012 running through a CO2 scrubber and still anything past 25% power and the Skimmer overflows.
Tunze Skimmer is GREAT! By Darryl on 5/31/2018Darryl would recommend this product to a friendEasy set up
fits perfect on my 210 rimmed tank
started skimming with in 2 hours
Bubbles and no skimming By Chico on 4/16/2018Chico wouldn't recommend this product to a friendThe skimmer throughs bubbles into the tank, Magnets do not hold well plus design is bad, impossible to get it higher if you have an upper frame in the aquarium tank. Plus, no skimming at all, only bubbles all over the tank. Two weeks trieng to adjust and nothing!
Tunze rules By Scott on 2/15/2018Scott would recommend this product to a friendToday’s markets are very competitve. There are many skimmers which work great but some take that little extra effort. Tunze has some of the lowest energy consumption devices, Lowest decibels, and great quality control. The 9012 DC is very expensive but worth it. Truly plug and play with set and forget features. Small size in the tank that skims the surface vs sump skimmers that have a mix of water. This is in a small 40 gallon hex right next to my family TV. I have owned many skimmers with much larger skimmers in my 150 gallon but Tunze is winning me over.
Tunze Rules By Scott on 2/15/2018Scott would recommend this product to a friendThe easiest skimmers out there. Just plug and play for the most part. I have the 9004 and the 9012 which are the masters of perfection for in tank installation. So happy with my recent purchase of my 9012 as it is so quiet in my family room. Set it and forget it!
Awesome By Eric on 11/15/2016Eric would recommend this product to a friendGot this to replace the large IM skimmer in my SR-80 a few weeks ago. It immediately started skimming and was super quiet. Highly recommend for the larger SR Innovative Marine tanks.
Excellent Compact Skimmer By Arman on 7/11/2016Arman would recommend this product to a friendI am using this skimmer on a 100 g All - In - One Style Tank, the fact that it only takes up 5" x 6" is fantastic. I recommend paying the extra money and getting the DC model. The DC Model essentially lets you control the pump, which makes controlling the skimmer extremely simple. This skimmer is truly plug in play. It is doing a fantastic job and I could not be more happier.
Which one of these skimmers from TUNZE may fit a IM Lagoon 50?