TA 90 in fiberglass pool? CH 100? Is this Bad?

Ahshort

Well-known member
Jun 3, 2022
46
Moses Lake, Wa
Pool Size
15250
Surface
Fiberglass
Chlorine
Liquid Chlorine
Cya 40
FC 4.5
CC 0
PH 7.6
TA 90
CH 100
2 yr old Latham (Viking) Fiberglass pool, cartridge filters, 15K gal
I’m reading diff things about the TA and CH. do I need to worry about these levels? Ph has been holding steady @ 7.6 PoolMath says to lower Ph and then aerate to get TA more in line, but I don’t really have a good way to aerate, no water features or anything. The CH is recommended to be much higher but then I read for fiberglass pool it’s not a big thing, I don’t want to dump more chemicals if it’s not really needed. Thoughts???
 
And CH @ 100? No worries?
Not at all. I know we show a min of 250, but that's more for stain control and general failsafe for pools that may have additional features that require a specific calcium level. But unless you have waterline tile, the gelcoat itself should be fine.
 
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