What size airline have you had freeze from condensate?

I'd get out as many as you can, especially the different colored ones, then run the aerator in the shallow part of the pond all winter, keeping an open hole. They should be fine..Emphasis on "should be".

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).