Plaster pool with SWG. Pool is 2 yrs old.
Last year, pH was a little volatile. Always creeping up. pH seems more stable this year.
Need to raise CH. Currently 150. I know I need to get this up to around 300.
Had flow problems with SWG last year due to calcium build up. Had to acid wash SWG at the beginning of pool season this year.
TA has always been high (120-140). Currently 140.
My question - do I need to lower TA to 60-80 range?
In pool school:
Water balance for SWG page suggests it's important to have TA in range of 60-80.
However, on "Lower TA page", says that TA shouldn't be lowered for a target number. As above, pH has been relatively stable this year. Via poolcalculator.com, CSI is -0.01 which is within range. However, did have calcium build up in SWG.
So, lower TA or no?
One other question:
Added powder CYA to skimmer sock 2 days ago. Dissolved now. Read on pool school not to measure CYA for 1 week. If I measure CYA now, is the measurement accurate being CYA dissolved from skimmer? Or do I really need to wait 1 week?
Thanks in advance for the help.