In-spite of my sump filters, I still see a need for large canister filtration like the FX5, but where an FX5 is impractical on smaller 75 and smaller tanks I still have a couple favorite alternatives and the Sunsun is one of them if for anything else its zero noise, tolerance for use with timers, its reliability, its simple no fuss setup, its oversize capacity and footprint, and its for all of that its incredibly low price. I mean for all that its almost a must have for your closet lol.