I have 4 aquaclear 110's. 1 ea in my 4 55 gal tanks. If the motor is making noise it is usually the shaft. They are easy to replace and only cost 3 or 4 bucks. The sand from my peacock tank will do a number on them. I order them online. Also could be your impeller. They're only about 12 bucks and I've only replaced 2 in 6 years. Way cheaper than buying a new filter. As for water noise I agree with Kaie.