Welcome to the forum!

Don't add the CYA until the algae battle is finished! (you'll end up sending a good portion of it out the backwash) If you want, you can put the CYA in a sock and hang it in front of a return, but I think you're better off waiting until the algae problem has been dealt with.

As Watermom (Hi Mom ) said, the flocs and clarifiers will only confuse your issue.

A little POP (Pool Owner Patience) is required here - I doubt you plan on swimming tomorrow, so take a few days and get rid of the algae completely first