I have a new-this-summer Marquis plaster pool, about 33,000 gallons, with a Jandy Aquapure. FC about 7, CC -0-, pH 7.7ish, CH mid-200s, CYA 60, TA 120-130, salt 3300. Also, unbeknowst to me the poolbuilder added Mineral Springs salt rather than plain salt, so I also have a borate concentration of 50+ and whatever else is in that junk that I don't even know to test for.
A couple of odd things about my pool chemistry - I'd appreciate any advice.
First, I have the SWG down to 25% production and have cut the cirulation hours down to about 8 daily and I still have FC of about 7, which as I understand it is overkill for a SWG pool. Is it possible the cell is defective - generating too much? Should I have it looked at?
Second, about the time the poolbuilder started up the SWG, the TA shot up from a normal range to about 190 - maybe due to the Mineral Springs stuff, I don't know. I got it down to about 80 by lowering the pH to 7-7.2 and aerating - a slow painful process. As I've let the pH drift up (it looks around 7.7 now) the TA has gone back up with it, back now to 120-130. I thought that the whole point of this process was that the aeration would increase the pH without moving the TA. Any insights?
Thanks for your help.