AC300- Noisy!!

[Endgame319]

I have had a number of aquaclears before, and they've all been more or less silent except for the sound of the outflow hitting the tank water - telling me I needed to top off the tank. The AC300 I got from a garage sale is horribly noisy, it works great, just the noise drives me crazy. It sounds like its coming from the motor. Anything I can do?

[Holokai]

Buy a replacement impeller, maybe try cleaning the motor/impeller area?

[malkore]

Yeah, i'd pull the motor and impeller. my guess is there's a bit of sand or debris inside the impeller housing.

[Pufferpunk]

Running an AQ dry (probably what the previous owner did) can cause the hole in the motor where the impellor spins (don't know the name) to get oval-shaped, causing the impeller to wobble inside. Also, is there a "stick" thing holding the impellor in place? Sometimes those can go missing & cause noise.

[MikeWinLDS]

Is it the top shaking and making the noise?