Randomly I checked my PH and it has to be close to 6.8.
I also checked my CyA and that was 40ish but I thought read that CYA readings were not accurate during a SLAM.
I would trust your cya readings - especially since you got the same number twice ... if your pool isn't clear, then check it again after the water is clear.
CYA could be high if your initial reading was really not 0 ... the test is hard to read for 20 or less ... so could be that you started out with 20 instead of 0 ... Or your pool is smaller than estimated.
This is correct.If there is not enough light you'd get a false high reading, if there is bright direct light (direct sun) you'll get a false low reading.