I would like to hear more opinions. I turn off my aerator for the winter months. The only fish kill stories that I have ever heard occurred during the hotter months - (or possibly a lake turnover in the spring or fall). I figure that if oxygen was a problem in the winter months, then there would be a lot dead fish in the 10,000 Natural lakes in Minnesota. Any other Pondbosses have an oxygen related fishkill occur during the winter? Is this rare or common?
