+ PLAIN 6% laundry bleach -- let's save the ag bleach for later, once you've gotten the basics under control.

+ You need a good test kit. The *only* good testkit that's sometimes available locally is the HTH 6-way (kit, not strips!) avail at some Walmarts. Otherwise, get a cheapie local OTO / phenol red kit. You'll need the K2006 eventually, however. (Test kit info page link in my signature)

+ Hard well water is not a problem. Iron or other metals in the well water IS a problem. Let me know.

+ You cannot run an outdoor pool well without stabilizer, unless you are willing to work yourself to death.