Ok so we got the Intex 77-Inche PureSpa on Prime Day to help with my Mom's bad back but were having some trouble getting the PH and alkaline just right. The Spa is 210 gallons and filled with water from our community well in southwest VA (AKA alot of limestone). The PH and TA both max out the test strip and I'm finding conflicting information online. So far I have added 202 grams of Clorox PH down as per the manual to bring it down 100 ppm. The strip in now reading somewhere between 180 and 120 for the TA 30 minutes later but the PH is still around 8.4. I haven't added any chlorine yet because I was told to get the PH in balance first. Also It warns that if the PH is too low It can damage the pump and tub and void the warranty. I'm brand new to owning a spa and need all the help I can get.
If need be I can also upload a picture of a test strip
The manual is located here
I just realized I rambled a bit so heres a TL;DR, I have never owned a spa before. The PH is currently at 8.4 or higher and the TA after adding 202 grams of Sodium Bisulfate is at 120-180 berfore it was 240 or more. There is no chlorine in the water as of yet. I need help getting everything in balance so its safe for me and my mom to use.