How big is your tank? There are absolutely loads and loads and loads of external filters on the market. Personally, I like eheim, this is the make of filter I have used and they are really good. I would stay clear of wet dry if I was you, the mechanism can slow up if the filter becomes dirty. I use what they call a cascading filter at the moment. I have two eheim 2028's and they are fantastic. One filter is good for 130 gallon tank. If you look on the links section, there is a link to eheim and Hagan who manufacture Fluval filters. A lot of people use these and swear by them. They are probably a little cheaper than eheim. I would go for a filter that uses mainly ceramic media. They are little hard balls that the bacteria live on. Some filters do have a lot of sponge in them, personally I don't think these are as good as the filters that have the ceramic media because sponge does get very dirty and clogged up quickly.
Hope that helps<br><br>Post edited by: Ironside, at: 2006/12/27 19:06