It sounds like a plan...They will definitely stay inside this winter. Hopefully, the rest will stay fine. The bottom of the pond rose a degree to 37. I had no parasite problems this season...so, I'd be surprised to see one now. If I don't like the way things look..I have my scope ready. I've read on a few boards about people with the exact same problem...same symptoms and warming worked well. Hope I'm lucky with these two. All advice is appreciated.