This may be a good time to note a problem with one of the EPDM pool liner suppliers. When building my large system, the first project was the tank, which I built during the late winter / early spring. Summer came and went with many other projects, and, to make a long story short, it was 7-8 months later while doing tax returns I spotted a problem with the billing. My wife, knowing I was doing the solar project, never mentioned anything about the bill on the credit card when the statement came in. While looking everything over for taxes, I found my supplier, Pond Solutions out of Troy MI, had boosted my charge from $150 plus freight to well over $700!! I called them, left messages, emailed them, sent them letters by snail mail, not a single response from them. I got the local Chamber of Commerce involved, they contacted them, got no response, and basically just listed them as questionable and unresponsive. I tried the credit card company, but they said since I didn't contest it with 30 days, I was SOL.
Beware of you pool liner supplier.
Tom