For super cleaning your aquarium and water polishing, the "Diatom" is a high-speed filter designed to filter aquarium water to an extremely pure state, without disturbing the natural bacteria levels.
It uses a unique diatom powder to filter particles as small as one diatom in size. Even some parasites and bacteria are large enough to be trapped and pulled out of the water by a diatom filter.
Used properly, your Diatom filter will eliminate the need to "tear down" your aquarium to clean.
Model D-1 is for most routine cleaning jobs. Filters over 250 GPH. Clears a 10 gallon tank micron free in 12 minutes.
The Diatom XL, which filters at up to 300 GPH (and measures 18" high by 7.5" wide at the base), is the highest speed aquarium filter on the market (designed for continuous operation).