Correct, plan to flush two weeks before your ready to harvest. So if you're seeing lots of orange /brown hairs and nice fat buds, sease the nutrients and just plain water from here out. What I do is one major flush per week and then just light watering every 3 days or so. After two weeks, let the soil dry out, give 24 hour darkness (not completely necessary but some strains will produce more resin and increase in smell). I also use terpinator during flowering and flush now.