Cloudy, then green with a never ending chlorine demand

[Watermom]

What is your pool volume? How did you add your cya and if you added it to your skimmer to dissolve in the filter, have you backwashed any?

It may be that it just hasn't dissolved yet. It takes a long time. Or it may be that their result is inaccurate. CYA readings seem to be one that pool stores often get wrong.

Is the pool looking better? Keep at it. You're doing the right things.

[cleancloths]

Pool volume is about 33,000 gallons. Added CYA to the skimmer and have not backwashed, did that the day before adding it. I know they often do things wrong, but this store is fairly good. The setup is they have a testtube that is sealed from the factory for each test. They then pipet the water in and insert the tube in a colorimeter - so no highschool dropout is trying to read colors - its all machine read. So, I will go with your guess that it is not fully dissolved yet.

The pool is looking much better. It is mostly clear in the shallow end and only slightly green tinted in the deep. But the rate of improvement has dropped. There is no slipperyness on the wall or floor.

[Watermom]

Keep hammering it with bleach. It will clear!

BTW --- I just checked and 4 lbs. of cya in a 33,000 gallon pool should take it up to about 15 ppm, not 30. So, your pool store's reading is probably right. But, if it were my pool, I'd still wait a few days before deciding to add more.