I am in the process of starting to building my own solar heater. We live in Michigan and would just love to be able to get an extra couple off weeks of pool time in the spring and fall. I had my design completely planned for using cpvc piping, but while at Lowes purchasing it, the worker talked me out of it saying that after one season, it will become very brittle and break . Have any of you made one using cpvc, and if so, was it successful?