Pond Boss Forums AERATION Systems questions Bury airline?

It depends on how high the drifts are!

I did something very similar for an air intake on the fireplace insert. I glued a 1/8" mesh hardware cloth screen inside the upside down 180 to keep any bugs/rodents from trying to call it home.

The difference in the boil is a combination of more volume and less resistance in the 1/2" line vs. the others. The larger lines are more resistant to condensation freezing in the winter as well.