[Django]

I used to use an AquaClear 30 and I would recommend it. I didn't like the way the water flow changed as the tank water level got lower.

I bought a Fluval U2 internal filter. Don't absolutely love it, but it's better than an aquaclear. I might try an Eheim if I was to do it again.

 

[Django]

I never noticed any noise from my AC 30. Of course, I only used it for about 2 years.

You could listen to where the noise is coming from. I bet it is the motor, the impeller. A good cleaning of the moter and the impeller might help. You can also buy a replacement impeller from Hagen.

 

[Django]

I just bought my filter a few days ago. The noise seems like it's coming from the impeller or motor. The noise of the filter went down by a lot. So I don't know how much noise is normal for that filter. Is it normal for that filter to make any noise?

No, the filter shouldn't be making any noise. Maybe you should exchange it for another one.