Pond Boss Forums AERATION Systems questions Aeration?

Hi Essup.
Yes I am using the Vertex 2 disk diffuser station and I went from an Ecoplus 5 to a higher volume 7 about a month ago thinking I may not have sufficient boil to keep the ice open.
Despite a much stonger surface boil the open water freezes up in short order. No problems with the airline freezing so far.

The Ecoplus 5 was able to keep the ice open in past winters even through extreme cold spells so I don't think it's necessarily an issue with the weather.

When I open up the ice above the diffusers a good amount of air is released...not sure if I am getting much of an oxygen exchange from this pocket of air underneath the ice? I suspect the escape of air through the small vent that naturally forms in the ice doesn't keep up with the air being released from the diffusers?