Quote Originally Posted by Algag
i have no idea when it started or what strain. im just really asking whether or not he should give it nutes to try and get more of the purple out. how important is a good flush because i would hate to see 2 weeks of flushing ruined if its not worth it.
Some strains are purple to begin with, so trying to 'wash-out' the purple is likely not your goal. (at least it shouldn't be...)

How often are you flushing? Should never be more than once a month, unless treating a problem. (flushing too often is a good way to develop root rot)

I stick to my regular nute schedule till last week of flower. 3 to 4 days before harvest, I flush well. If another watering is needed, plain ph'd water only. (likely unnecessary)