Oops. Now what? Cloudy water, high numbers.

[FormerBromineUser]

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Your reported CYA numbers are between 63 and 78 so let's say 70. According to the Best Guess Chart, http://www.poolsolutions.com/gd/best...ine-chart.html , your shock level is 20, but personally I would aim for 22.

In order to clear your pool, you will need to get your FC up to 20 and keep it there making frequent additions until
1.) you lose no more than 1.0ppm FC overnight (test after sunset and 1/2 hours after your last addition and then test at sunrise to calculate the overnight loss)
2.) your CC is 0.5 or less
3.) your water is clear

You will need your reagents so that you can test regularly to determine how much bleach to add to maintain that FC at shock level. This means at least twice a day during the process. (More often helps.) 1 cup of 8.25% bleach will raise your FC by about 1ppm. Use that as your guide.

A CC number or 0.4 is either another estimation or you are using the 25ml sample for your test. You can use a 10ml sample, 1 scoop of powder, and then count the drops multiplying by 0.5 instead of 0.2.

CYA does not "keep FC up". It helps slow the effects of sunlight burning it off.

For now, 1 gallon of 8.25% bleach will bring you from 4ppm to 20ppm, but remember, you need to maintain at least a 20ppm level until the above criteria are met.