Here is the sticky that Jan referred to. It is not in its final form yet, but should still be useful to you.

http://www.poolforum.com/pf2/showthr...ith-well-water!

Until your registration is complete, you'll have to log out to be able to read it. Actually, that probably means that you won't be able to follow that link. So, instead, log out and then look for the sticky at the top of the "Pool Chemistry for Intex-type pools" section of the forum. The thread you'll want to read is the top one.

Hope this helps!