my cya has dropped to 0. I have been shocking my pool for the last few days and backwashing and adding more de as well.

because my water was so dirty i am going through de fairly quickly.

Now should i add the cya now, or should i wait until I am not backwashing my de out every 24 hours?

i dont want to add the cya and then have to backwash it out. It was my understanding that I shouldnt backwash for at least 48 hours.