So there really isn't a section for hardware and I have a reef so I figured I'd post it here. I manage to get most of my equipment used, good quality and cheap, but when I picked up a Rio 4100 I wasn't so lucky. I was in a hurry and I didn't properly check it out; low and behold the impeller is trashed. The magnet and the shaft is fine, it's just the plastic part. I'll scrap around the local fish stores and see if I can find anything, but if I can't is it worth replacing, or should I just get a new pump for my sump? Run. On.