We bought a 27' ag round 54 " high pool and know nothing...except what the sales person told us. I have been on this site since Monday reading, reading, and reading some more....WHAT have I gotten myself into.....the FC must equal the TC what?????? I know nothing and my husband know less than I do....and that "will fill a library" I like all of your comments and suggestions but where do I start. HELP HELP HELP anything will HELP so please HELP US or we will have a green dull thing and not a blue sparkly thing.