So I just bought a Aqua Clear 20 for my 10gallon to replace my old Whisper I had there. I have a AC 50 for my 30 and it runs great but the 20 seems to have a slight rattle in the impeller. Im going to let it run over night to see if it works it self out but I was wondering has anyone ever experienced this?
I pushed the tube down as hard as I can and tried removing the cover but the rattling seems to be down by the motor. I also just noticed an airspace in the pipe right above the impeller right under neath the flow control. I checked on ym AC50 and even on low there is no airspace. I think that airspace is creating a vortex in the pipe cause int impeller to wobble and make the noise, any suggestions on how to get rid of it?
Are you sure it's the impeller? I know you probably already checked this, but every time my ACs were noisy I found that it was the lid vibrating, and not anything about the filter itself. Does it still make noise when you remove the lid?