Look you arrogent Prick. I already said that I mis-read the post. You however, are free to do any damned thing you want with your solar heat. There's absolutly no point in arguing with you because, even though 99% of us that design and install radiant systems would never run 150 degree water through the floor, explaining it to you is a total waste of time. Go crawl back under the rock you came out of. Be sure to tell all your idiot friends how you one upped an expert. Should make for a good drinking story.