I have a 355 gallon Hotsprings Sovereign hot tub with an ozonator. Here are my current readings:
FC: 2 ppm
TA: 60 ppm
CH: 150 ppm
pH: it could be 7.4 or 8.2, depends on the test.....
So, after going through some growing pains the first time I filled the tub, I then spa purged, drained, cleaned, and refilled the tub. Over the course of a day, I brought the TA down with muriatic acid by adding small amounts using the pool calculator, and then testing the pH and TA. While this was happening, I was surprised that my pH never really dropped a whole lot, even just minutes after adding the acid. I would say that the pH stayed right around 8, with the jets running the whole time. According the the calculator, I should have seen significant drops in pH initially after adding the acid, and then it should have crept back up with the jets on. Is my pH staying high just because I ran the jets too much? If this is the case, than any time someone uses a hot tub with the jets on, you would have to add acid. Also, I've attached photos of the pH test from two different kits, one is the Taylor kit, and the other is brand new from the spa store. The Taylor looks to me to be good (7.6-7.7), while the other still reads a solid 8.2. Yesterday, I though that because my FC was almost 7 ppm that the pH test was reading false on the non-Taylor test kit, but today, with a FC of 2, it is still reading 8.2. I guess I am just frustrated that I can't get a consistent reading for pH, and therefor I don't know how to respond. Sorry for the rant, any advice would be appreciated. IMG_0420.jpgIMG_0418.jpg