Cloudy Water & CL Going Going Gone

[KurtV]

I think you've gotten sound advice from Marie (mbar) and Dave (duraliegh) on shocking your water because of the high overnight chlorine consumption you're experiencing, but I wouldn't overlook the cal-hypo as the possible cause of your cloudy water. Cal-hypo can cause cloudy water temporarily and because you've been adding it regularly, it could well be the culprit here (for the cloudy water only, not for the chlorine consumption). Try bleach as your chlorine source instead and see if the cloudiness problem is ameliorated or eliminated.

[duraleigh]

Hmmm. Good catch, Kurt....that's a good thought.

[Jakebear]

Dave --- last time I climbed into my washing machine, I “Got all shook up” so I don’t do that very often any more.

Thanks to all for the responses.

Just for grins we visited three pool stores today (See my post on CC testing) and believe it or not one of them mentioned the Cal Hypo and told us to turn off the pump over night to let it settle and then vacuum.

My free chlorine level only dropped .5ppm last night but was still cloudy this morning. We put 5 pounds of K-MPS in before we went to town. It was pretty clear after 5 hours of circulating while I was gone. I will probably shock tomorrow anyway --- bought bleach today.

[CarlD]

Yes, good catch Kurt. I hadn't been really following this thread but when I saw cloudy and cal-hypo and suggesting swimming at 20ppm...well, I had to look.

Quite frankly, I would NOT swim when keeping the pool at shock levels. If you look at Ben's writing, he's kind of iffy about it. What he's very CLEAR about is that higher levels of chlorine aren't an issue if they are the residual level for the CYA put you there--if your CYA is 120 and your FC is 12, go swimming. But at shock levels? I don't think that's what he meant.

I noticed the calcium level wasn't posted. I'll bet it's now through the roof. Each time you add a mass of Cal-hypo you may get clouding. If that IS the cause and NOT an excessive calcium level then a good dose of muriatic acid should clear it.

Meanwhile, switch to bleach/liquid chlorine instead.

[Jakebear]

Hi Carl and all

My results for last evening were:
pH 7.7 by titration
FC 7.5 ppm (FAS-DPD)
TC 7.5 ppm (FAS-DPD)
CC 0 ppm (FAS-DPD)
TA 90 ppm (by titration)
CH 280 ppm (by titration)
Phosphates <100 ppm
CYA = 60
ORP = 755

I have noticed the CH has risen from 240 – 280 in the last week but didn’t give it much thought since this forum kind of ignores CH in a vinyl pool.
The pool looks good this morning after letting the pump off for the first time in 10 in days. I did add some K-MPS yesterday which did its part to clear it up too.

Still have some Cal Hypo left but will probably leave it there for now.

Thanks for the opinion and your interpretation of Ben's intent of the CL/health issue. I read the entire China Shop series about three times but never found any real conclusion to the original question – BTW do you really have dust bunnies??

Also please see my other post on CC testing. I am really confused with that.

27000 inground vinyl DE filter