What is the total amount of CYA you have added and how did you add it? Until you get a CYA reading, you'll need to add bleach morning and evening. Each time you test, add enough bleach to get back up to about 6. In a 14,600 gallon pool, each quart of 6% bleach will add about 1ppm of chlorine to the pool. After you get a CYA reading, you can go to testing and adding bleach in the evenings only.