

Normally we advise creeping up on the target as it’s hard to undo if you overshoot. But you don’t have that far to go. You can either add 10 ppm twice, or maybe add 15 and go from there.
7.5 is fine for now. Don’t worry about the ‘ideal range’. The PH will probably come up on its own soon enough.
Plug your model into the ‘effects of adding section’ of pool math to see what the production is with your unit. You can get both the runtime and % in the same menu to see what you need to maintain X FC a day. Or hang tight for someone to do the math that’s familiar with your model.
It adds slowly so you won’t see any big change if you turn it on before testing. But definitely circulate the pool so that’s good and mixed first.
For now test morning and evening to get a good baseline. It’s a bit of a chore but an ounce of prevention whoops a pound of cure here, as you’ve seen.

Go from there once you are comfortable with how your pool is behaving at this point in the season. If your FC is a little off, adjust the SWG accordingly up or down. If the FC is low and anywhere below target range, dose with liquid for a now boost and then adjust the SWG up. Try again tomorrow to see if it worked. Watch it like a Hawk until you prove to yourself that it’s doing what you need.