HelloI have a 55g currently with a Fluval U4 underwater filter, but I was looking on ebay and I found this 3-stage filter on ebay http://cgi.ebay.com/3-STAGE-CANISTE...itu=UCC&otn=5&ps=63&clkid=7615080761691452986
Its a great price I think? but whats it do exactly? and can I hook a gravel cleaner to it?
Its a great price I think? but whats it do exactly? and can I hook a gravel cleaner to it?