Well.... doing better than last year, but still not great. Last year there was no visible hole for basically the end of January, all of February, March and half of April.

Interestingly, the single diffuser has opened up a hole - maybe because it is closer to shore. The dual diffuser has created some gray in the ice and snow but still no hole (about 7:00 from the open hole). The dual in the deep water at the far end of the pond looks like it MIGHT have a hole open, but it is nothing big (that hole doesn't show up well when small due to distance from camera and angle of pic). No sign at all of a hole from the windmill.

Unfortunately for the holes more snow on the way. Maybe a LOT of snow....

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