yes I agree with dhhbomb what I do is just water for 2 weeks with straight water but for the last few days b 4 harvest say 4-5 days is I dont water at all I mean your about to cut the plant down any ways the plant wilts yes but it sucks all the remaining water/nutes out of its roots and gives it to the buds/leaves then uses the last remaining nutes and that way there are no left over nutes in the plant when I harvest just pure mj.