2 weeks sounds drastic, i flushed for 2 days my first grow and it was magnificent and smooth, and that was just plain water, my 2nd grow i flushed for around 7-9 days thinking it would make a better taste. the crop wasnt as good as it could of been to begin with, so it was hard to tell, but i dont think it needed the extra flushing, i'll go with my set 3 days flushing, 2 days with ph'd water and florakleen, then 1 night of fresh water and darkness 24hrs, then chop, be a good basis for comparison i think, my sample nug is already nice and tastey, so it can olny get better i hope