everyone will tell you different things. What i have had good luck with was, two weeks before estimated harvest date start feeding plain water , no more nutes at all, then about three to five days before i harvest i stop watering completely. some people use bags of ice as their final watering before letting her dry out for harvest. others dont. But from what i have experienced, when using soil or soilless mix, stopping any watering at least three days before harvest seems to put the plant right to the edge, uses up last remaining nutes in her veins and goes completely yellow on the leaves, and at harvest , because i havent watered in at least three days, the plant is much more dry than if i had kept giving water up until the end, which can cut off a couple to a few days of dry time so you can get into the cure jars quicker. cant wait to see how she looks after trimming and stuff.