FC consumption rate of 3.5ppm (loss of 1 + 2.5 SWG) is a bit of a red flag. Yesterday’s rain and high winds over the past few days have knock lots of debris into the pool, so that’s the explanation for now.
10.0
FC
-0.04
CSI
2.5 ppm FC • SWG 16 hrs @ 65%
.5 drop in FC = 2.75 consumption rate. Salt tested with Taylor kit.
11.0
FC
3200
SALT
-0.04
CSI
Slight gain in FC (.5ppm) with 2.5ppm being added (16 hrs @ 65%). That translates to FC consumption of 2ppm/day with a moderate amount of swimming and high UV.
2.5 ppm FC • SWG 16 hrs @ 65%
11.5
FC
7.8
pH
80
TA
78 °F
TEMP
-0.03
CSI
Increased SWCG to 65% for 16 hours or 2.5ppm of FC per PoolMath.
16 oz of 31.45% (20º Be) Muriatic Acid
1.8 ppm FC • SWG 12 hrs @ 60%
Vacuumed
Filter Pressure:
22
11.0
FC
8.0
pH
78 °F
TEMP
0.16
CSI
1 gal of Liquid Chlorine • 10%
1.6 ppm FC • SWG 12 hrs @ 55%
FC consumption rate = 2.35/day with very high UV and temps in the low 90s.
Vacuumed
Filter Pressure:
22
1.6 ppm FC • SWG 12 hrs @ 55%
10.0
FC
7.8
pH
80
TA
80
CYA
75 °F
TEMP
-0.06
CSI
Vacuumed
11.5
FC
73 °F
TEMP
-0.08
CSI
Aquapure 1400 General Fault appeared again today. Fault cleared within a few seconds but I don’t know how long it was on. Minor scale on power probes, most of which washed off with water. Additional cleaning with 4:1 water:acid bath for 20 minutes, followed by rinse with water. Scale removed. Cleaned sensor with isopropyl alcohol, but it still reads 3400 when last Taylor test result was 3000.
Vacuumed
Heavy rain last night. FC consumption rate = 2.6 over past 2 days. Might be skewed by rain.
1 gal of Liquid Chlorine • 10%
9.5
FC
7.8
pH
80
TA
72 °F
TEMP
-0.08
CSI
11.5
FC
-0.09
CSI
1 gal of Liquid Chlorine • 10%
Heavy rain early morning. FC consumption rate = 2.1/day over past 4 days.
1.6 ppm FC • SWG 12 hrs @ 55%
Vacuumed
8.0
FC
7.8
pH
80
TA
80
CYA
70 °F
TEMP
-0.09
CSI
1.6 ppm FC • SWG 12 hrs @ 55%
Filter Pressure:
22
VacuumedBrushed
10.0
FC
7.8
pH
80
TA
-0.08
CSI
10.0
FC
7.8
pH
80
TA
3000
SALT
72 °F
TEMP
-0.08
CSI
40 lbs of Salt
1 gal of Liquid Chlorine • 10%
9.0
FC
7.8
pH
70
TA
72 °F
TEMP
-0.16
CSI
24 oz of 31.45% (20º Be) Muriatic Acid
10.5
FC
7.8
pH
90
TA
76 °F
TEMP
0.04
CSI
11.0
FC
7.8
pH
80
TA
74 °F
TEMP
-0.05
CSI
1.8ppm of FC should have been added since last test (15 hours @ 50%), per PoolMath. .5 drop = consumption of 2.3ppm over 27 hours, which tracks with yesterday’s estimate. UV was higher today than previous days.
1.5 ppm FC • SWG 12 hrs @ 50%
11.0
FC
80
CYA
-0.10
CSI
1.5 ppm FC • SWG 12 hrs @ 50%
FC dropped by 2 over 3 days, which were overcast. Some sun today and will test again tomorrow. I suspect the SWCG isn’t producing optimally. 4.5ppm should have been added, along with the drop of 2 means 6.5ppm consumed over 3 days, or a little over 2ppm per day. Assuming that is actual consumption vs a problematic SWCG, tomorrow’s test should be 11ppm (1.5 produced - 2 consumed = -.5)
11.5
FC
7.8
pH
80
TA
69 °F
TEMP
-0.13
CSI
13.5
FC
7.8
pH
80
TA
-0.12
CSI
1 gallon of LC increased FC by 3.0 vs 3.9 as calculated by PM, but date code is 9/9/25 - 7 months old.
13.5
FC
-0.12
CSI
Saw another General Fault on SWCG this morning. Got a picture of it this time. Warranty good through August. Water is clear. Brushed floor after running cleaner yesterday. Heavy rain Friday night/Saturday morning.
1 gal of Liquid Chlorine • 10%
1.5 ppm FC • SWG 12 hrs @ 50%
10.5
FC
7.8
pH
80
TA
90
CYA
70 °F
TEMP
-0.12
CSI
Opened pool yesterday, stirring up dirt from ledges, seats and steps. But other than that, pool was clean. Running cleaner with fine debris filter to get dirt that settled overnight. Added 1 gallon of LC to bump FC back up to 10+.
9.5
FC
7.8
pH
80
TA
-0.05
CSI
FC holding steady, but still overcast. Salt tested with Taylor kit. Skimmer baskets relatively clean, other than pollen in the sock of the east skimmer. Running cleaner with fine debris filter.
10.0
FC
7.8
pH
80
TA
2800
SALT
74 °F
TEMP
-0.05
CSI
Slight FC drop is still a bit of a concern. It has been heavily overcast for the past 2 days and cleaner didn’t pick up much debris, so pool bottom is relatively clean. SWCG at 50% for 12 hours should produce 1.5ppm of FC, which may be low in high UV, but not when cloudy. .5 drop indicates 2ppm consumption, and actually more since SWCG was at 100% for 5 hours after yesterday’s test. Filter is at 22psi only 10% above the low of 20. pH increase may be due to FC of 10, as it has been very steady for a few weeks. No acid added. Cleaned all test tubes and water collection bottle with alcohol.
10.0
FC
8.0
pH
80
TA
3200
SALT
74 °F
TEMP
0.12
CSI
Only a 2ppm increase in FC with 100% SWCG production over 19.5 hours. PoolMath calculates +4.8, which would mean consumption of 2.8 overnight/cloudy day, if SWCG is producing as calculated. Running cleaner today. Will do OCLT soon, but algae would be very surprising. FC has been 10+ until the past few days and still well above minimum. SWCG has been suspect for a year, with observed General Faults occasionally, but checked out ok by Jandy last summer. May be reaching end of life in 3rd year.
10.5
FC
-0.09
CSI
Rain and wind resulted in more pollen and seeds in the water. Will run SWG in boost mode to get FC back over 10. Run cleaner tomorrow. Salt per SWCG sensor, which is probably slightly high. Last kit result was 3000.
8.5
FC
7.8
pH
80
TA
3200
SALT
72 °F
TEMP
-0.09
CSI
9.0
FC
7.8
pH
70
TA
80
CYA
-0.18
CSI
Heavy rain and lots of pollen explain FC drop but will watch closely. Filter is on the verge of cleaning. Increased SWCG to 50%.
9.0
FC
7.8
pH
80
TA
-0.09
CSI
Rain last night resulted in lots of pollen knocked down - fairly heavily coated skimmer basket socks and noticeable on kitchen countertops. More rain expected over the next 2 days. Pool cover should come off soon after rain ends.
11.5
FC
7.8
pH
80
TA
80
CYA
3200
SALT
73 °F
TEMP
-0.09
CSI
CYA possibly at 90. Retest tomorrow.
12.0
FC
7.8
pH
80
TA
80
CYA
-0.10
CSI
SWCG increased to 40% as we are experiencing warmer than normal temps with high UV.
32 oz of 31.45% (20º Be) Muriatic Acid
12.5
FC
7.6
pH
90
TA
80
CYA
71 °F
TEMP
-0.22
CSI
2 lbs of Dry Stabilizer
11.0
FC
7.8
pH
80
TA
70
CYA
71 °F
TEMP
-0.08
CSI
2 lbs of Dry Stabilizer
Temps have been over 90° with bright sun for the past few days, which could have contributed to FC drop. Lots of seeds and pollen from trees starting to bloom were in skimmer baskets. Plus, CYA is low and needs to be increased. Ordered 12# of HTH CYA from Amazon to be delivered tomorrow.
11.0
FC
7.8
pH
80
TA
-0.10
CSI
More than 1” of rain last night and also rain last week, which explains CYA drop. FC remains steady even with rain. General Fault code still appearing intermittently on panel, but doesn’t remain on for more than 1 display cycle.
13.5
FC
7.8
pH
80
TA
60
CYA
3200
SALT
65 °F
TEMP
-0.10
CSI
Significant increase in FC, probably due to running the cleaner and adding CYA. CYA test results are suspect due to low lighting at the time of testing, but are in the expected range since adding CYA.
14.0
FC
7.8
pH
80
TA
70
CYA
-0.15
CSI
FC holding steady, even after heavy rain. CYA test is more confident due to bright sun. Will run cleaner again today.
11.5
FC
7.8
pH
80
TA
50
CYA
62 °F
TEMP
-0.10
CSI
Salt tested with kit. CYA is questionable due to lighting, but definitely low. Note increase in FC - combo of cleaning and increase in SWCG run time.
11.5
FC
7.6
pH
60
TA
40
CYA
3000
SALT
53 °F
TEMP
-0.51
CSI
Water was below 50° for a week or 2, which may explain drop in FC. SWCG increased to 35%. Ran cleaner yesterday to pick up debris caused by snow/ice buildup on cover.
16 oz of 31.45% (20º Be) Muriatic Acid
11.0
FC
7.8
pH
90
TA
3100
SALT
51 °F
TEMP
-0.21
CSI
More fill water added. No rain in a couple of months.
16 oz of 31.45% (20º Be) Muriatic Acid
16.5
FC
8.0
pH
80
TA
51 °F
TEMP
-0.09
CSI
SWCG at 30% since mid-December. Temps have been in the upper 70s to mid 80s.
1 gal
of
Liquid Chlorine
• 10%
Vacuumed
Brushed