So I live in buffalo Ny. The weather this week is in going to be in the 40-50’s. I take my koi out for the winter and put them in a pool in my basement. I’m going for surgery in a couple weeks. And will be laid up for about 2 months. Is it to early to open the pond? I use the pool water that they are currently in. So it doesn’t shock them. And then from there, I let them swim and add more water. I know it won’t totally freeze. Just I don’t think it would be a shock either. Just asking opinions.