I had my pool resurfaced in January from plaster to tile. It's been a learning process these past few months, but I have adopted BBB and am moving boldly into my first Hawaii summer as a pool boy (ahem, pool serviceman). I have a few other posts on this site and believe that TFP has saved my life, or my wallet anyway....and therefor my marriage.
So, my question is regarding all tile pool surface and alkalinity levels. I have seen a few places online say and was told by a pool service place that it's a good idea to keep my alkalinity up at 150 ppm. This seems to be about keeping the tile attractive, but I get the impression from some reading that I need to be concerned with the grout, which is basically comparable to plaster.
From my own reading/studying, I believe I need a slightly negative CSI. Putting my alkalinity up to 150 would push my CSI positive, so I don't see the sense in that regard. Could anyone provide some wisdom on this?
My current readings:
FC 11 (Goal 11 with CYA 90)
PH 7.6 (Goal 7.6)
TA 85 (after reduction of 30 for CYA) (Goal 70 - 90)
CH 290 (Goal of 300)
CYA 90 (Goal of 80, I'm in Hawaii)