marcus wrote:
The bio wheel filter isn't very common in the uk, but as far as i can tell foam is placed around a wheel. the idea is the wheel turns giving the foam more area to generate Bactria. having a length of foam will still work but I couldn't say it would or wouldn't work any better. i would have thought if a length of foam without the wheel done the same job then the makers of the wheel wouldn't have gone to the trouble of putting them in?
Good point.
Anyways TeeDeeZee, I would stick with the biowheels. They will go through periods where they get gunked up and rotate slower (which is perfectly normal), however with the emperor models the spray bar keeps them moving so there's no issue. My only recommendation is you only have penguin filters is to make sure you fill the extra media cartridges with ceramic rings/balls etc. Almost every size type biological filter media will actually fit in them...(I use the large fluval ceramic rings) or better yet...buy some mesh bags, and fill them with media in place of the cartridges...you can fit around 6 bags in each emperor, thus dramatically increasing surface area for bacteria.
For some further info read the article about halfway down in the thread link: I found it rather interesting.
Bio Wheel Filters