I'm a Fluval user, although a lot of people put these filters down I have found them reliable. I have a couple of my Fluvals for years with no problems what so ever. I do a weekly cleaning of the filter media and clean the tubes once a month, others I have found go a least a month without cleaning and those are the people that seem to have the problems. So fluvals my be a little more high maintenance then some of the others filters but for the cost they are well worth it. The only thing I have found is at times they can be hard to prime.