As you may already know from other posts that I am looking a pressurized pool sand filter for the some supplemental mechanical filtration to polish up the water in my main tank. But after some research I see that some people use them as their main biological filtration.I see Mojo is using one for his pond so obviously they can be used as a main source of filtration( correct me if I am wrong). But some web sites are saying that sand filters should not be used in fish tanks because they clog too quick and you should use a bead filter, but if regularly cleaned I think that using them should be fine(maybe the people selling the bead filter just want to sell their product, but again I dont know). As I have had no experience with this kind of filter I was wondering if anyone has used one and could lend some information or advise o the subject.
Here is Mojo's pond.
http://www.aquamojo.com/pond.html
Here is Mojo's pond.
http://www.aquamojo.com/pond.html