I have spent several hours reading old posts,but one of the things I havn't gotten to is the faq's.Not knowing what questions are already there,I would say-answers about filtration would be way up there, diatome vs. charcoal etc. What brands people have used,have them rated as to ease of set-up & use,functionality,noise level and so on.It seems to be the question most asked from what I've read so far.(if you have this covered already.....ooops,sorry.)