My SW pool has been great all summer. About a week ago, I noticed it was cloudy--mainly in the deep end. Chemicals looked great (see above) but the CYA was low for TFP guidelines for a salt pool, so I added stabilizer to get it to about 80. A few days later it was still cloudy, although FC never seemed out of range. So, I picked up some shock at Walmart and brought FC to 22 (CC still 0). Next day, FC still almost 20 so I turned the SWG from 90% to 20%. Next morning=GREEN POOL! Without testing the water, I threw in more powdered shock and the next day, FC 20 with CC 0. Ph was a little high through all this (maybe 8) so I added MA. Brought it to 7.2. It's back up again but my ph always creeps up.
Well, I'm mystified. My water is still pretty green so I guess I will use the SLAM process, but I don't know how this happened. I've had issues a couple of times with algae, but only when my SWG board went out. Everything was going along fine when the cloudy issue surfaced and then everything went south. Any ideas what brought this on? And am I right to start Slamming this afternoon?
Any help would be appreciated.