Originally Posted by
ahhuhz
What kind of cover are you placing over the pvc? I think 36" is a little to wide especially where you live. I would have gone no more than 24". When we lived up the road from you in Hazleton PA, we built a frame out of cedar 2x4's with a pool solar cover over it. The pond went no lower than 43 degrees. We left the BD w/air running all winter. The pump was in a heated pump house. Heater was a cheap one from lowes. We shut down the falls and skimmer, we did not have a mid level on that pond. We also ran the filter system all winter and never had any problems. The PVC on mine was for venting. I put in on the end of November and took it off the end of March depending on temps.