Re: Cannot Get Rid of Cloudy Water
Your alkalinity is fine for a vinyl pool. I wouldn't add anything to raise it.
Blue is good! Keep running your filter 24/7. When is the last time you backwashed/rinsed the filter? I would put it through a backwash and rinse cycle, start with a clean filter, and then keep it on.
With CYA at 70 your optimal FC (free chlorine) is 5-10 ppm. I would add enough regular unscented household bleach to raise it to 10 ppm. Please test for combined chlorine (CC) or total chlorine. You may still have algae and might have to shock but we can't know that until we know those values. Could you call the pool store that did the testing and ask what "chlorine" means: total chlorine? combined chlorine? free chlorine?
Your pH is within range but at the low end. You might consider raising it to 7.5 using 20 Mule Team Borax.
With a vinyl pool you don't need to worry about total hardness.
We can probably get your pool cleared up by Memorial Day but we use the BBB method. That means we rarely use floc, algaecides, clarifiers and such. Our primary approach is regular bleach to provide sanitizing chlorine, borax for pH up, baking soda to adjust alkalinity, muriatic acid to drop the pH, and stabilizer (also known as conditioner and CYA).
Something that's helpful in a cloudy pool being cleaned is to brush it at least once a day just to get the stuff that's settled on the bottom back into solution so it can be filtered.
Oval 12.5K gal AGP; Hayward 19" sand filter; Pentair Dyn 1 HP 2sp pump on timer
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