Solar Cover/Chlorine Recommendation, FC consistency

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karicali

Active member
Aug 27, 2024
31
TN
Pool Size
40000
Surface
Plaster
Chlorine
Liquid Chlorine
Hi friends,

The solar cover we bought says to keep a MAX chlorine of 3 PPM. Lol. Do we just ignore that? My CYA is 50. Do all covers generally recommend something similar?

Also, I took three Chlorine samples and got different results. (7/9/10) I hadn't added chlorine since yesterday. What's the expected standard deviation on this test?
 
Everything says max of 3 ppm FC. That is because that is the EPA standard for drinking water. NO CYA.

Ignore it.
 
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karicali said:
FAs-DPD I think! It's the one TFP recommends with 10 mL that turn pink and then you count drops
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How far apart (in time) were each of those tests? Make sure you hold the dropper bottle vertical and that you get a big scoop of powder in there. It’s ok if there’s a few grains of powder that remain undissolved.
 
Bperry said:
How far apart (in time) were each of those tests? Make sure you hold the dropper bottle vertical and that you get a big scoop of powder in there. It’s ok if there’s a few grains of powder that remain undissolved.
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It was all within 5 minutes. I wasn't holding the bottle vertical. I will do another OCLT tonight. My morning readings were 7/8.5/7 so I either passed or failed last night! (At least I didn't REALLY OBVIOUSLY fail ha)
 
karicali said:
It was all within 5 minutes. I wasn't holding the bottle vertical. I will do another OCLT tonight. My morning readings were 7/8.5/7 so I either passed or failed last night! (At least I didn't REALLY OBVIOUSLY fail ha)
Click to expand...
The error tolerance is +\- 1 drop so 7.5-8.5 would have been the expected range.
 
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