Less chlorine needed the more the pump runs?

Johnny B

LifeTime Supporter
Mar 19, 2009
Charlotte, NC
Yes, I realize the water will be better filtered but I thought chlorine use/demand was more an issue of organics, sunlight, CYA. What is the relationship between pump run time & chlorine use? I happen to be lowering my TA via aeration so running the pump 24/7, man way less chlorine. I was losing 2-3ppm FC per day (not unusual), now 0.5-1, yes, 3 days in a row.


TFP Expert
LifeTime Supporter
In The Industry
Jun 12, 2009
NW Ohio
There is little relationship between pump run time and chlorine use. There are far too many variables regarding chlorine usage to draw any conclusions from a 3-day sample. If anything is happening right now my money would be that your aeration is cooling the water which slows the algae reproduction cycle.