Can't raise FC

[spoon359]

Water is blue/ green after shocking, it was black. I've been adding three gallons of bleach every night for last 7 days. Have chunks of green algae floating in it, they are starting to turn grey/white around edges. From what I've read in pool school I think I'm on right track just wanted any advice I can get. Test results have been about the same for a week except CC that has went from .4 to 1.4. Using Taylor K-2006.

33ftx54" AGP
Vinyl liner
TA 110
PH 7.4
FC .8
CC 1.4
CYA 45

 

[Bama Rambler]

Welcome to TFP.

The first thing to do is go from adding chlorine every night to adding it as often as you can. That will speed up the process a lot. Also be sure to add enough to get the FC to shock level for a CYA of 45 each time.

 

[frustratedpoolmom]

I agree, hit it hard, testing and adding hourly if possible. Only adding once a night wont get you very far...

 

[Casey]

The sunlight is going to compete for that chlorine too. So, as stated above 2x, hit it hard during the day light hours.

 

[spoon359]

Ok thanks I'll do that. Knew sunlight used it up faster so I was only doing at night. Will start doing day and night.

 

[duraleigh]

If you have "chunks" of organic matter in your pool, you should remove them with a leaf net...pronto.

 

[spoon359]

Ok I have been removing with net, but of course everyday there's a new batch.

 

[duraleigh]

Then you are not killing it and need to maintain more chlorine. One of the essentials of getting your pool clean is removing all solids.

 

[spoon359]

Ok. Pool calculator says I need to add 7 gallons of bleach to reach shock level of FC. Should it be added all at once or spaced out over a few hours?

 

[Richard320]

Ok. Pool calculator says I need to add 7 gallons of bleach to reach shock level of FC. Should it be added all at once or spaced out over a few hours?

All at once.

You'll be rechecking and adding more in a few hours.

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[thunderkyss]

Ok. Pool calculator says I need to add 7 gallons of bleach to reach shock level of FC. Should it be added all at once or spaced out over a few hours?

All at once.

You'll be rechecking and adding more in a few hours.

Actually, with the numbers you've reported (OP) I'd check it every hour or two & add enough chlorine to maintain your FC to shock level. At first, it will be consumed quickly & as you go on it will take longer & longer to consume the same amount of chlorine.

For instance, you may have to add another gallon after two hours. Then another gallon two hours later. Then half a gallon two hours later, then half a gallon two hours later. Eventually a gallon would keep you at shock level for the whole day.

The test though, is how much chlorine you use at night. Once you wake up with the same FC level as you had when you went to bed, you can allow your FC level to drift down towards normal maintenance level.