Originally Posted by A-aron
My aerator system has worked well most of the winter. However I have has several instances where the lines get blockages. I think its usually trapped ice that migrates up the lines.
Aaron

Ice does not migrate up the line. Instead what's most likely happening is, your pump is sending some condensation down the line that is reducing the pipe area and sometimes freezing.
Do you have the line sloped down hill the whole entire way, or is there a low spot that can collect water? Water in the line would easily restrict flow and once it's frozen, continue to build up till it's blocked.