We are in week 9. day 61 of flower. I have been flushing these plants for 5 days already using botanicares clearex. I will be flushing with clean water only for the rest of the harvest. I plan on harvesting at day 74 of flower with a 48 hour dark period before i harvest. REMEMBER if you are using chemical nutrients you will need a good flush of about 2 and a half weeks so your not smoking chemicals . the dark period will ensure the plants stores all extra nutrients in its roots before harvest.