Well I understand that too. Everything I have read about each piece of aquarium equipment, is either good or bad. My guess it's a crap shoot. For every 2 to 5 people that like one thing there are 6 more that have a problem with it. From canister filters to heaters, to lights. I have read bad reviews on what to use as substrate. I have read them from Consumer Report, to these forums. So I guess we live and learn. But thanks for your input, I appreciate it as well. So I think it is like buying a new car, if you know what I mean.