Overnight FC Test

[alanrmeadows]

For the purposes of the Overnight FC Loss Test, does a cloudy day (no appearance of the sun) work as well as a night? In other words, can I essentially do the test in the day instead of night if it's cloudy outside?

Thanks,
Alan

 

[JasonLion]

No, even heavy overcast still causes some chlorine loss due to "sunlight".

 

[Bama Rambler]

Just like you can sunburn on a cloudy day, the sun will still burn off some FC.