First off let me say I am in no way trying to deture anyone from building a sump filter. Just in my opinion they are not worth the trouble. I built my sump last summer for my 125 and I don't have any pics of it anymore but I was awful proud of it. However I had to ad water every two days no matter what I did, at least 5 gal a week. when I was gone it would just dry up and make noise. I recently switched to two 55 gal hanging filter and its just as clear and cheaper than buying 50 foam dish scrubbers. It was an awful experiance I just wanted to rant on that subject for a moment. Does anyone else have any issues with these darn things?