I have followed the dichlor than bleach method on here successfully for a year in my hot tub. I used to have a whole house filtration/antiscale system that still allowed the well water calcium to be at 360 ppm. I used to set my TA at 80, and would hardly ever have to mess with PH. The wife didn't like the filtration system, so we switched back to a water softner. When I refilled the hot tub, of course the calcium was at 0, so I added calcium until 150. No matter where I set TA at now, the PH keeps rising above 8, even during the week when we don't use the tub. I have lowered TA down to 50 and up to a 100, and still have PH rise regardless of jets(aeration) time.
Any thoughts on this? Do I need to add calcium to mimic well water again?