Are the pool calculator ranges set in stone or can they vary between pools? I am writing about a different pool than in my signature, so here are the numbers:
Free form, in ground, diamond brite finished pool (7842 gallons), with a SWCG. The current numbers are:
FC:17 (and dropping after having to shock it due to pool service neglected to detect a burnt out salt cell)
CH: ? (not sure right now, ran out of reagent. but usually around 300)
Temp: 85 and going up (I live in south Florida with constant sun on the pool)
Accoriding to the pool calc, these numbers give me a CSI of -0.33. I noticed that by keeping my salt level at 3200 (where i want it) and my TA at 90, the CSI would be -0.15. This is much better. But having a TA of 90 is outside the recommended (IMPORTANT) level as stated in the Water Balance for SWG's article. Is there a reason why? Is TA @ 90 ok for this pool? Do they just vary like that?
Thanks for the comments.