I've notice my pool is using (or losing) too much chlorine. I bring the level up to the high end of the recommended level by Pool Math app and 3 days later it test zero free chlorine. Water temperatures are hovering between 84-88F. The pool is in a screen cage so less sun. Is this normal? Could it be the chlorine I'm buying not what the label says?
Here's my recent log:
==========================================
------------------------------------------
Build Type: Plaster
Volume: 10300 gallons
-----------------------------------------
Latest Test Result Summary:
FC: 0.0 (yesterday)
CC: 0.5 (3 days ago)
pH: 7.7 (yesterday)
TA: 100 (yesterday)
CH: 320 (yesterday)
CYA: 60 (9 days ago)
TEMPERATURE: 88° (yesterday)
CSI: 0.20 (yesterday)
==========================================
------------------------------------------
Chemical Addition 04-21-2023 @ 05:35 PM
------------------------------------------
+ 113 FluidOunces of Bleach
------------------------------------------
Test Results 04-21-2023 @ 04:26 PM
------------------------------------------
Free Chlorine: 0.0
pH: 7.7
Total Alkalinity: 100
Calcium Hardness: 320
Temperature: 88°F
CSI: 0.20
------------------------------------------
Chemical Addition 04-19-2023 @ 05:46 PM
------------------------------------------
+ 11 FluidOunces of Baume31
------------------------------------------
Chemical Addition 04-19-2023 @ 05:44 PM
------------------------------------------
+ 82 FluidOunces of Bleach
------------------------------------------
Test Results 04-19-2023 @ 05:39 PM
------------------------------------------
Free Chlorine: 2.5
Combined Chlorine: 0.5
pH: 8.0
Temperature: 86°F
CSI: 0.54
------------------------------------------
Chemical Addition 04-18-2023 @ 05:54 PM
------------------------------------------
+ 76 FluidOunces of Bleach
------------------------------------------
Here's my recent log:
==========================================
------------------------------------------
Build Type: Plaster
Volume: 10300 gallons
-----------------------------------------
Latest Test Result Summary:
FC: 0.0 (yesterday)
CC: 0.5 (3 days ago)
pH: 7.7 (yesterday)
TA: 100 (yesterday)
CH: 320 (yesterday)
CYA: 60 (9 days ago)
TEMPERATURE: 88° (yesterday)
CSI: 0.20 (yesterday)
==========================================
------------------------------------------
Chemical Addition 04-21-2023 @ 05:35 PM
------------------------------------------
+ 113 FluidOunces of Bleach
------------------------------------------
Test Results 04-21-2023 @ 04:26 PM
------------------------------------------
Free Chlorine: 0.0
pH: 7.7
Total Alkalinity: 100
Calcium Hardness: 320
Temperature: 88°F
CSI: 0.20
------------------------------------------
Chemical Addition 04-19-2023 @ 05:46 PM
------------------------------------------
+ 11 FluidOunces of Baume31
------------------------------------------
Chemical Addition 04-19-2023 @ 05:44 PM
------------------------------------------
+ 82 FluidOunces of Bleach
------------------------------------------
Test Results 04-19-2023 @ 05:39 PM
------------------------------------------
Free Chlorine: 2.5
Combined Chlorine: 0.5
pH: 8.0
Temperature: 86°F
CSI: 0.54
------------------------------------------
Chemical Addition 04-18-2023 @ 05:54 PM
------------------------------------------
+ 76 FluidOunces of Bleach
------------------------------------------