man i love sponge filters.especialy the ac series of power filters.regular air driven sponges are great too.one day some one will come out with a sponge filter that you can use with a bio wheel now that would be truly awesome
I love my sponger filter. Fish cant get sucked into it theyre great. I just rinse out the sponges everyonce in a while but not fully as youl take away some of the bacteria.