Chlorine Lock ?

[FormerBromineUser]

How's it going?

[mjsboone]

I have not been able to hold the water at FC 25ppm for overnight. That's where I'm at. I have met 2 of the 3 criteria that Watermom told me to achieve. Hold FC at shock level of 25ppm, CC less than 1 (which I have achieved!) and the water is clear (which is beautifully clear). The FC seems to go down over night by 1-2 ppm. I add more bleach to bring it up and I think I'm ok, then test again in the morning and down it goes. It has been a little frustrating. We have been vacuuming to waste and adding water when needed. Not sure what else to do...

[CarlD]

It's only dropping from FC=25 to FC=23 or 24 overnight? Then you are good as gold! If it dropped to FC=10 then you'd still be fighting. But down 1-2ppm from 25? Not to worry!

[mjsboone]

After I test at dusk, generally I am at about 21. I add enough bleach to bring it up to 25 and then overnight I go down again when I test in the morning before sun up. I add mor bleach to bring it up again trying to hold that 25ppm as I was advised. It just evades me! PH is 7.4 but I understand that may not be correct because of high FC that I am trying to hold on to.

[CarlD]

If it's only dropping to 21 or higher, you are FINE! If everything else is now good, you can let the chlorine gradually come down to the maintenance level and go swimming!

[FormerBromineUser]

Thanks, Carl! I had a feeling mjsboone might be struggling out there waiting for input.

[mjsboone]

Thanks for the feedback. I appreciate it.