New member but working on pools for some time.
We have a indoor salt water pool.
Lately we have had a High Plate count, and have failed the lab tests. We have shocked the pool the first time to 10 PPM, and failed again. I then shocked it with Lithium Shock to 20 ppm and again failed. Drained pool partially and refilled with fresh water, along with shock treatment and were still getting the plate count issues. There are no coliforms present on the lab results. Latest plate count was 1140 CFU/ml acceptable is 100 or less.
Rather then drain the entire pool, close the facility for 3 days to do it, due to reheating the water, any suggestions on how we can combat this?
volume 67585 Liters
Acutrol Pool Controller
Autopilot Lectranators x 2
Sand Filters x 2
Temperature maintained is 29-30 Celsius
Salt water maintained at 3400 ppm
Ph setpoint is 7.3, maintained by acid tank and pump
Pool has Wapotec System added on, Hydosan, Hyrdoxan and KlearFloc (coagulate)
ORP setpoint is 750
FCL averages between 0.60 and 1.2, TCL is around 2.85 on average.