I've run my Vertex system non-stop from the day the water started going in the pond and it does a great job at turning the entire pond over at least once a day. Pond is 7' deep at the center (bowl-ish shape). The forecast is calling for lows in the 20's the next 5 days starting Monday morning. I checked my water temp today (about 12-18" below surface) and it was 56 degrees. The only fish in the pond are FHM/RR, RES, and CNBG (and maybe a couple goldfish tossed in from the galvanized stock tank).

My question is, should I shut off the aeration until temps come back up or leave it running? I don't really have a concept of whether a week of hard freezing temps at night would drop the water temp to a "dangerous" level if it's continually circulating or not... just looking for some advice.

/c

96.85840735 percent clayton... the rest is just pi.

We become what we think about.