People who have aquaclears,

[dixienut]

i have 7 and can't hear them unless water level is low,.. or power goes out and some didn't re prime,..

 

[jpappy789]

Only time I hear it is if the water line is too low from evap...

 

[CWO4GUNNER]

They do get noisy when the impeller magnet and the shaft it rides on gets worn out and starts to rattle but it takes a long time. As part of a craiglist tank buy I got an old AC300 that had been on a salt tank for years. When I started set it up it sounded like a underwater coffee grinder. After ordering and replacing both the shaft and the impeller magnet ($12 total) it ran silent again just like new. Check the slop between the shaft the impeller magnet hole, you should not have any loose play back and forth, if so you need to replace both.

 

[GEV83]

Yes AC filters run silent until worn out I have not had any problems with them rattleing due to a loose lid though.

 

[jagarundi]

I had two 70's on my tank and they weren't 'loud' at all. The sound of the cascading water was quite soothing actually. The only problem I had with them was leaking O rings. I had to replace them with a canister.

 

[gustavo85]

2 AC's will make no sound at all. I could not even hear the water falling sometimes.

 

[colematthewmala]

all i use is aquaclear and yes they are a little noisy but you adapt to it very fast.

 

[Slappy*McFish]

Mine are dead silent. By far the quietest HOB filter I've ever used.

 

[colematthewmala]

mine must have something messed up because they always make a lo humming\whirring sound.

 

[SMinNC]

Is your filter loud?

Nope.