So we drained the pool on Thursday, and I reread the entirety of pool school while I was waiting! We worked all night last night leveling it out, and have had the hose in there, filling it up all night. It's got about another foot to go till it's full. It had been sitting with that unbalanced unchlorinated water for a week before we drained it, then the liner sat on the side of the yard for 24 hours. I wanted to wash the liner before we stated refilling it but it wasn't really an option at midnight, so while I'm waiting for this last bit too fill I have some questions. Once it finishes filling I'm going to test everything, I was just gonna test the pH and TA for now because I know there is no FC or CYA in the pool. Those readings should be higher than there supposed to but I'm not sure considering I used strips last time. I'm going to put the readings into pool math and see how much MA I'm going to need to add. I was planning on not putting the full amount but half of it, testing again and then pouring the other half. How long after I add the MA can I wait to test and possibly add more?