I don't know if we can be sure why we had winterkill. I would assume due to low oxygen levels? We quit aerating when water hole froze oever, midwinter. And it was only in the deeper end. Our lines may have froze. We also had some extreme temps. -20 -30 below F. I am not quite sure if there is a way to keep lines open/and water hole clear in these kinds of temps? I hear you can pour alcohol down lines to keep from freezing?
I appreciate the quick response and would welcome any suggestions for stocking.
