Agedddanswered grow question 5 years ago I think they need to get some weight before flush, some Carbs and high PK, in my opinion for at leas 1/2 weeks, then the flush, when they will be eating stored nutrients. But i shouldnt do the flush too early because i have seen a lot of early harvests when its your first grow, and what happens is that the buds are tiny, some patience and you will be rewarded ^^. Be sure to be failiar with the flowering phases and its all your choice :)
Take care buddy