Overnight Free Chlorine Loss Test

linen

LifeTime Supporter
TFP Expert
Jul 30, 2010
8,649
0
48
Twin Cities, MN
#2
Re: Overnihgt Free Chlorine Loss Test

As long as you give the chlorine enough time to mix (maybe and hour), you can do it with pump off, but you will want to be up extra early to get your pump moving the water a while before doing the morning test. IMO, it is better to just leave it on, but it doesn't have to be.
 

CraigSm208

Silver Supporter
Aug 8, 2009
11
0
Bloomington, IL
#3
Thanks, Linen. One further question. Usually I do the morning test for the OCLT before the pump has been turned on and before the water is circulating. Does that make my free chlorine test invalid?