The size of your reef aquarium – A larger aquarium needs a more powerful skimmer to process all of the water.

leather coral aquariums with long-polyp corals and anemones, for example, the load of dissolved organic matter may be higher, sometimes it may even be vital. The Tunze 9001 and Tunze 9002 are both effective and efficient reef tank skimmers, but they are not rated for the same tank capacity. The 9002 features a larger and more powerful motor, making it better suited for larger aquariums. However, if you have a nano-tank, you should be fine with the smaller Tunze 9001. Consider your needs and buy based on your tank and reef requirements. So, I'm a new reefer and I got this Tunze 9001 (bought it secondhand, but is fairly new and still has warranty) for my 60L (16G) tank. Amedium organic sensitivity is usually found in mixed aquariums inhabited with leather and stoney corals (LPS). Filters, sponges, etc. can also be found there. A DOC skimmer that is designed for 1,000 liters (264 USgal.) is likely to only skim 40% of organic substances with this light pollution. Thus, a DOC skimmer for 1,000 liters (264 USgal.) should be used for a tank with a maximum content of approx. 600 liters (158 USgal.).Using the Tunze Flash Skimming Principle, the Comline DOC Skimmer pulls water through an efficient surface suction. The Tunze 9002 is slightly larger than the 9001, but it still works on the same “Flash Skimming” principle. As its engine whirs, it pulls water into a small chamber and adds air to create a steady stream of foam. This foam collects scum before it can settle into the tank and then overflows into a skimmer cup that you can empty to prevent algae and protein build-up. I played around with it a little more now and did find out that the default position has least microbubbles. In this position I barely have any and with the two others they're allover the place... You do need to put the little sponge in, then.

And three: The microbubbles. I've read that many people have had issues with this. Some found a solution, of which I tried a few of, but I couldn't find a way to fix it yet. Perhaps it has to break in? Although it's not that I just put it in the tank: it has been in the water for a bit (but not working) so it does have that little slime film on it. The 9002 uses slightly more power, requiring 10 Watts of electricity to pull in 150 liters of air every hour. With a stronger motor, it creates a steadier stream of foam that flows into a 0.3-liter skimmer cup without creating micro-bubbles inside the tank. The foam simply passes into the skimmer cup, helping to keep your tank clean through the week. Two of our favorite aspects of the 9001 are how easily it is to hide and the silent operation. The skimmer is so small it will easily fit in many AIO chambers along with AIO’s with hoods. You could run this in your bedroom or office without ever hearing it! While the 9001 works so well it does have a few quirks. First, the magnet that mounts to the skimmer itself uses four small plastic “clips”. The Tunze Comline Doc Skimmer reduces energy consumption and space used on equipment, with a neat compact design that ensures 24/7 high performance. Restoring harmony inside the aquarium, the Tunze Comline Doc Skimmer, recommended for aquariums up to 140 litres, removes all organic pollutants from the water with flash protein skimming that fetches instant results. Though many people do seem to have it working properly... Or they just deal with the noise. Or the fact that it's not skimming properly.Thus, a DOC skimmer for 1,000 liters (264 USgal.) should be used for a tank with a maximum content of approx. 300 liters (79 USgal.). Both the Tunze 9001 and 9002 are great reef skimmers but, ultimately, the right choice depends on the size of your aquarium and your budget. If you have a nano-sized reef aquarium, we recommend the Tunze 9001. If you have a larger reef aquarium, we recommend the Tunze 9002. Conclusion Now that we’ve taken an in-depth look at each product, it’s time to decide which one is right for your reef aquarium. You’ll need to choose based on a few simple factors, such as: