All this testing and balancing makes me
Dropping chlorine - effect from heavy rains or indicative of need to shock?
High TA - acid and aerate?
June 12 after 2+ inches of rain
FC - 1
pH - 7.1
TA - 70
CYA - 70
Added bleach. FC up to 5 (tested 5 hours after bleach from arm's length depth at the side of the pool opposite where bleach was added)
Dumb me forgot washing soda adds TA and I brought the pH up to 7.5 (and TA up over 100)
out of town, no tests, no swimmers other than the plethora of beetles that fall from the pine trees
heavy swim load of young kids, 1.5" of rain, no tests, SWG running at 50% for 12 hours
Backwash 2" from pool (roughly 800 gallons)
FC - less than 1
Added bleach. FC up to 5.
It continues to rain another .5" or more of rain throughout the 18th after adding bleach.
FC is down to 1 again.
pH - 7.5
TA - 100
CYA - I'm out of reagent
I have CYA reagent on order.
I have acid available if needed.
Should we shock or wait and see if Chlorine level holds after the rain lets up?