Thanks! This is great info to consider!

4CornersPuddle, I live in Box Elder County just North of Brigham City. I graduated from USU in Logan in 2006.

So I just moved the aerator closer to the edge about 2-3 feet deep. I may want to move it closer to the edge though to be sure the open water meets the shoreline. I just checked the temperature and it's not down to 50 yet. I'm thinking I may just shut the aerator off until ice starts forming. It's good to know that the diffuser may still mix things up. I've been nervous about low dissolved O2 because I dont fully understand it.

The pond was just dug in April, so the first Winter will be interesting. I'll keep you posted.

Let me know if anyone else has ideas or suggestions.