Here's what I am seeing. I've had my pool for a little over a year now. My SWG worked great last year, in other words produced the amount of chlorine I would expect. This year it appears to be producing way less chlorine for the same run time. I didn't keep good track of what percentage I ran it at last year but I do remember when I had it at certain percentages my FC was going up day over day. This year even running at 85% I am losing chlorine day over day, and I have more CYA (40->70). I keep my chemical levels in check and am very diligent keeping the ph between the recommended levels to prevent scaling due to my hard water. I have not had any scaling that I can see on the salt cell (or anywhere else) but just to be sure I soaked it about a month ago in vinegar for an hour. My question is why would my SWG appear to be producing much less chlorine than it should be?
Here's a little background:
-Last year my CYA was around 40-50. This year I raised it to 70 as per the suggestions from TFP.
-I lose about 2 FC per day. I'm in sunny AZ.
-I have my SWG currently set to 85% and according to Pool Math that should produce 2.6 ppm FC. But last night I took a measurement and was at 2.5 FC and this morning I was at 4.5 FC which is only 2 FC produced.
Pump run times: 4 hours @ 3105 rpm + 4 hours @ 1725 (overnight) I've verified that the flow check is good at both speeds.
Salt cell diagnostic readings: 26.41V 5.03A 82F 3100ppm
My current values as of this morning.
FC: 4.5
CC: 0
ph: 7.8 (I usually lower to around 7.4 from 8.0 every week)
TA: 80
CH: 750 (we have hard water in AZ but since I control my chemical levels really well I do not have scaling issues)
CYA: 70
SALT: 3200
Temp: 82 F
CSI: 0.32
I've done some searching on the forum and haven't found much. A few of the related threads I have found but no concrete answers.
Here's a little background:
-Last year my CYA was around 40-50. This year I raised it to 70 as per the suggestions from TFP.
-I lose about 2 FC per day. I'm in sunny AZ.
-I have my SWG currently set to 85% and according to Pool Math that should produce 2.6 ppm FC. But last night I took a measurement and was at 2.5 FC and this morning I was at 4.5 FC which is only 2 FC produced.
Pump run times: 4 hours @ 3105 rpm + 4 hours @ 1725 (overnight) I've verified that the flow check is good at both speeds.
Salt cell diagnostic readings: 26.41V 5.03A 82F 3100ppm
My current values as of this morning.
FC: 4.5
CC: 0
ph: 7.8 (I usually lower to around 7.4 from 8.0 every week)
TA: 80
CH: 750 (we have hard water in AZ but since I control my chemical levels really well I do not have scaling issues)
CYA: 70
SALT: 3200
Temp: 82 F
CSI: 0.32
I've done some searching on the forum and haven't found much. A few of the related threads I have found but no concrete answers.
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