Mustard Algae, 2nd year of battle

[motomom]

Very interesting about the borate, Waterbear, thanks. I just ran my numbers again, here is the evening results:

FC 22
CC .5
pH 7.8
TA 180
CH 240
CYA 35

This morning I ran the FC test but did not have time to post before I had to leave for work, but it was 40, which is an improvement over the night before. BTW, my pool temp is 78 and outside temp is now 74. It was well into the 80's today here, bright sunshine. Should I add more CYA?

And yes, I have had problems keeping pH lowered. pH bounce pretty much describes my pool, if it means bouncing UP.