Okay...I've purchased two additional 3.5 x 9 solar panels for a total of 4. I was going to plum them in series, however, I don't think the water would be in each panel long enough to heat it up enough. (Last year the water was snaked down one half of the panel and up the other, then to the second panel, down one half of it and up the other and to the pool, the water felt down right hot coming out of the return!) Over the winter I realized the panels are only rated at 8 gpm and I'm forcing the entire 43 thru them! I plan on giving each panel it's own feed to lower the psi, but if it only goes in one end, travels 9 ft. and out, instead of down one half and up the other and out for 18, feet will it heat the water up enough?

I'm also tossing the 1.5" corregated flex pipe the PB installed for some 2" flex PVC with the smooth inner surface hoping to decrease drag. This seems to make sence except the solar panel's opening is only 1". I don't know if I should use 2" if it's opening is only 1".

Any suggestions?

Shelley