Hi, and welcome to the group!! There are literally hundreds of posts around the forum just like yours--so many that Pooldoc made a sticky exactly for folks with AB pools with well water. If you'll log out, go to the main forum page, then go to the second Sub-forum called "Pool chemistry for Intex-type pools", open that up, then click on the first sticky, called "before you fill your Intex-type pool with water" and read through that sticky, it will give you an idea of what you're dealing with. We'll be glad to be here to help with questions, but there are a few decisions you have to make first, that are outlined in the sticky.

Just let us know what you want to do, and we'll be happy to help!