Hi, I'll be assembling our first pool this weekend and had a question for y'all. Should I add my chemicals as I fill the pool or should I wait until it's full and see what my numbers will be. I'll be filling it out of our well and I do know that water is on the acidic side. (5.9 I think). Thanks for any advice. This looks like a great site with a ton of information. I have ordered my test kit and I belive the pool is ~19K gallons.