My Marineland Magnum 350 canister filter stopped working after some generator issues after Hurricane Sandy rolled through. After our first generator died, my Uncle came by with another and apparently hooked it up wrong (power was going to the wrong prong on the plug). This caused all kinds of issues in the house like smoking surge protectors, but no real damage except my filter just rattles now. I have been looking around for how to fix this and all I find is replace the impeller or magnet on it. They both look fine but I don't want to buy a new one and find out that the backwards electricity at 220v screwed up the motor. I have disassembled it three times looking for anything that could be wrong and found nothing. Right now it turns on, rattles, and has no flow at all, any help would be appreciated.