Pond Boss Forums AERATION Should I aerate? Fall aeration as the nights cool down

I don't think that they will "need" to be aerated during the winter but......

That is a good question for Highflyer to answer with data. He has a deep pond, and he has an O2 meter, AND he does not have an aeration system. It would be interesting to see if he's taken readings down deep during the winter to see what his O2 readings are when compared to the top 8' of water.

For instance, I checked a pond last week. It has an aeration system, but it was dug deeper post aeration system installation and the air stations were not re-positioned. The diffusers/air stations were at the 6' and 8' depth. The pond was dug to 18'. The concern was where the threshold of 5mg/l O2 was in the pond. There was still 5.0mg/l O2 at 12' down, but the O2 levels quickly dropped to 2.2 mg/l at 18'. Water temp at surface was 70°F and 68°G at 18' depth.

On a side note, the aeration system was left in the pond with all the water as the pond was dug deeper. Clay pond that needs no compaction. Enough clay material washed out of the bucket as it was being dug to cover the air line and diffuser air station closest to where the digging was being done with over about a foot plus of clay. That airstation was within 40' of the digging. The airstation that was 80-90 feet away still had clay over it, about 6"-8".

Another reason to drain the pond prior to making it deeper.