Hello, and welcome to the forum!!

I can't answer your questions about the pool, but just wanted to say that this is one of the safest sites you'll come across when it comes to protecting personal information--Pooldoc, the site's owner, is very internet-safety conscious, and there is a TON of information to be gained by having full access to this site.
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The pool construction gurus should be around to answer your questions shortly...

Janet