Gold Leaf Harvest/Lighting/Dark cycle

question from a fellow grower- Is it a good idea to put my loved ones in three days of complete darkness to apply a little stress for terp development then uproot the gorgeous ladies?
Also, what is the desired ppm when measuring run off of plain h2o after flushing before harvesting?

Yes, its a good idea to force a dark period of up to 72 hours before harvest. You want to get your PPM down as low as you can before flushing, but realistically around 250 should be good.