Greetings all....new to the Forum, but I've read some of the conversations on solar heating. Trying to find out what is the best solar choice for heating my in-ground, approx. 510 sq feet pool all year long here in Southern California. (Riverside is about 80 miles inland from the beaches of Los Angeles). It get's hot here in the summer, but nights do cool down. I am actually in the process of buying a completely new filter and pump too, so the whole package can be compatible. I DO have a solar cover which is rolled on and off....so I know that will help. But from what I've read, there are many options for solar heating, but don't know if any of them will heat it to 80-85 in the winter? Anyone out there in this climate who does heat all year with solar? From what I've read Evacuated Tubes are the best....but they are pretty much only used back east? Won't they work all the better and longer here in California then? Also read about glazed and unglazed tubing. Thanks in advance!