Not necessarily.
You'll know when its done when the last pull you did yields no/very little product/xtals.
If all you are scraping up is a pitiful amount..call it a day.
My pulls tend to get more yellow (probably because I leave them longer towards the 5th and 6th) I give up after 6 pulls.
Please do not PM tek related questions
Reserve the right to change your mind at any given moment.