My pool will be here in a little over a week. I want to purchase a 4x20 Solar Bear panel. I have been looking online. Why is there such a big price difference from stores? Am I missing something, like are these the same items? This is an example, but many shops have HUGE price differences. I know between the two I am linking to, that one is 2" header and one has 1 1/2" header. That is the only difference I see. Is the 2" header THAT much better?? I plan to have my panel next to the pool, ground level, or slightly above, if I put on a rack. It will be by the pump.
2": http://www.poolsupplyworld.com/poolsupp ... /NS725.htm
1 1/2": http://www.nationaldiscountpoolsupplies ... plabg.html
Also, what else will I need for this? Since I am installing close to ground level, I don't need vacuum plug or whatever, correct? Do I need anything other than a 3 way valve?
Also, if I need more hosing, which do you suggest? Below is a link to a few kinds: Flex PVC Pool & Spa Hose, High Grade Filter Hose w/cuffed ends
http://www.nationaldiscountpoolsupplies ... abgrf.html