- May 5, 2010
- 137
The overnight free chlorine test at high levels of chlorine (16ppm-19ppm) is starting to baffle me. For the last 3-4 days, in my unprofessional estimation, my pool has looked great. However, I still can't get the overnight free chlorine test to show absolutely no loss in chlorine. Last night at 9:00 pm I got two back-to-back readings of 18 & 19. I used the EXACT amount of pool water on both tests, so I'm pretty sure that's not the problem. This morning at 6:00 am I got back-to-back readings of 17 & 17.5. Is it possible that there is some margin of error for these tests...like possibly the size of the drop that comes out of the solution...or something else? I kept my pool covered all winter and have been shocking for a week. And again, the pool likes great and is sparkling clear. My CC's are consistently at .5. What do you think? Should I continue to shock? Is my overnight FC loss such that I'm probably OK?
Thanks,
Alan
17,500 gallons
In Ground
Fiberglass
Sand Filter
South Arkansas
Thanks,
Alan
17,500 gallons
In Ground
Fiberglass
Sand Filter
South Arkansas