I'm growing in coco and have various additives that are supposed to be added when the buds are roughly 3 weeks from harvest. (pk 13/14, Gravity, Flush) Question 1 is how many more weeks does it look like these buds have left? Question 2 is about adding the nute additives: Canna PK13/14, which goes with the Canna standard nutes and is supposed to be used for one week during the "generative stage" by one set of instructions and for 5-11 days 3 weeks before harvest by another. Gravity Flower Hardener: Supposed to add density to the buds. Also supposed to be given for one week 3 weeks before harvest. Flush - We all know what flush is. I think the standard is to flush 3 weeks before harvest and then give nothing but water from there out. So I guess I give the PK and the Gravity for one week, then flush and wait for the pistils to turn? Comments? Suggestions? Many thanks in advance!