I'm having problems with my emperor 400 ever since I added new activated carbon. I just simply put more in the seperate gray holders that it came with and now my filter is making a clicking noise. everyone can tell that one of the carbon pieces is stuck somewhere. I looked at the impeller and there were no signs of any carbon ever entering it, but the sound I am 100% positive on is coming from the middle part where the impeller is. My filter shut off last night until this morning and I had to re-set it up and prime it and now it's still making the same sound. I have no idea where the piece could be but it's driving me insane I can't find it. It's only one piece stuck some where. A seperate problem I've had since I got it was that my bio wheels don't turn due to the spray bars never spraying fast enough.
