We purchased our home in December and inherited this pool. I've had some help opening it and getting started with my TF100 test kit. My initial testing was
The next morning after adding bleach up to 7ppm I had
I was advised to SLAM because the rate of drop from 7 to 3.5ppm was too much in less than 12 hours and overnight. With the CYA at 40 I slowly crept up to the correlating SLAM level. I've charted every testing and the first 3 days I was at a CC of .5-1.0. On day 3 I saw my first CC of 1.5 and on day 4 saw my first CC of 2. I stayed between CC of 1.5 and 2 for a couple days. In the mean time I decided to test the CYA again to see if maybe something changed after the pool had been circulating for a number of days. New CYA with both my wife and I comparing our results is 60. So we decided to raise the SLAM level to correlate with the chart (that was on 5/12) Now with the new SLAM level higher we saw our first 3 on 5/13. Again in the meantime I ordered more chemicals because we've been testing so much and I thought maybe the DPD powder I received was the wrong consistency. I received my new chemicals today and it does seem the powder consistency is different. I did a side by side test with the new and old chemicals with these results.
Old: FC 20.5
New: FC 22.5
So, am I not seeing the CCs disappear because I haven't been at the appropriate SLAM level for long enough? The pool was clear on opening and is crystal clear now. I also I have been brushing and vacuuming daily. I will be performing the overnight test tonight into tomorrow morning just to see if we pass. At this point I feel like I'm doing everything right and can't get rid of these stupid CCs. Any help and insight would be greatly appreciated!