Hi there! Thanks in advance for looking over my numbers. Going on vacation and have just started paying attention to CSI because I think I have a calcium deposit on my grout.
TA=80 (until recently 100 -- I lowered it today with M. Acid in reaction to CH and CSI worries)
CH = about 450
CYA = about 45
CSI = .09 (was around .5 this morning - could that be right?)
This morning while brushing the pool I noticed a small white patch about the size and shape of a caterpillar on a grout line. I chipped it off. Is this calcium? I'm guessing it is calcium because of the high CH reading.
Another reason I believe it's calcium: My son told me two days ago he noticed decreased clarity when opening his eyes underwater, a whitish haziness. I don't think it's algae since cc is .5.
The CH and CSI were both elevated as of this morning. After lowering TA to 80 with one addition of muriatic acid, the CH is the same and CSI went to .09 (does this sound right? I have never paid attention to CSI until today, not sure what makes sense yet. I don't want to mess up my pool/equipment with calcium scaling!
I read that I can either (1) partially drain to address the high concentration of calcium, or (2) lower TA. I tried the route of lowering TA and got it to 80. Is that enough to fix the calcium problem? In general, what should my strategy be to get the right CSI, CH, etc. going forward? I feel like PH is always trying to rise in my pool. The PH of our fill/tap water is 7.8 which explains why it would be 7.8. Often when I check it is around 8 or higher.
Finally, we leave Wednesday for a ten-day vacation, during which the pool will be dosed with 64 oz. liquid chlorine every other day (8.25%). (I use about 220 oz chlorine weekly in summer). Every four days (every other visit) 30 ounces of muriatic acid will be added. Any observations about this plan would be appreciated.
I reduced TA