Pond Boss Forums AERATION Systems questions When are multiple airstations required?

If it were mine (it is not too dissimilar in size and shape from my 2 ponds) I would put a deep water diffuser in the hole and a shallow water diffuser near the shallow (top in the images) end. I'd run them both in the Summer and run the shallow one selectively, as needed, in the Winter to prevent Winterkill.

Note that my methodology has only had about 5 fishkills in 38 pond-years.