I looked at the diary in week 9 and you did a too drastic defoliation. The plant needs light on the leaves; if you remove the leaves, the plant will have to grow them back, so instead of directing all its energy to the buds, it will have to split it between buds and new leaves... so you'll have a reduced yield... For the flush, if you start 2 weeks early, you can water normally; the plants will slowly discharge while absorbing the last nutrients, and then you can do a thorough flush a few days before harvest. You'll avoid these problems...