I do like it, the one seems to do fine for a tank this size, for anything much larger like over 90 gallons, two would probably be better, at least for me, Im a megga flow. maniac. Still having some iussues with the controller not responding to mode changes though, havent had a ton of time to mess with it but I seem to be having problems accessing and dialing in the short pulse mode. Once I figure out the mode settings, I think it'll be perfect, you're gonna like it, its very quiet and very powerfull!