This is my first season with our new pool. Outside of my run in with the murky green monster back in March before we added any chemicals and before I knew anything about pool chemistry, all seems to be well. I would just like some verification that I'm running the levels properly because I read conflicting information. Plus I noticed this morning some scale formation on my zinc anode (is that normal???).
These are my test results from this morning and are indicative of what they have been for going on two months. The pool water has been crystal clear as well.
FCl - 1.50
tCl - 1.67
pH - 7.7
Alk - 96
CH - 179
Cya - 45
Pool temp is 83 degrees F and the salt level is 2900ppm.
I have the salt generator set at 50% and run the pump at night for about 10 hours. The pool gets direct sunlight from first light through 3 or 4 in the afternoon. We had a pretty good storm two nights ago. My main concern is the pH because in the literature from my test kit they call for 7.6 as the upper range. The pool calculator has the upper limit at 7.8! The scale on the zinc anode is what is bothering me, but the balance calculator puts me at -0.15 which I think is ok, right? I'm just looking for a sanity check. Should I lower the pH?