thnaks for the responses. The solar discharge is about 5 degrees warmer than the pool water. It is taken from the pool and discharged back into it through independant plumbing. No mixing. The intake for the filter/chlorinator is unaffected by the solar discharge. The temp on the Autopilot is always within 2 degrees of the actual pool water temp. So for practical purposes we can ignore the solar system. The only effect is the slow climb in temps through the day and cooling at night.