Genetics aside its pretty much all about the type of lights you use to grow.
. A good quality HPS in my experience grows the tightest buds. The new LEDS are very close behind.
If folks would not have gotten greedy and abused MMJ to make a living. Much of this would not be happening IMO. The original law was passed so a person could grow there own meds. Or for a caregiver to grow meds for a patient. Not for someone to make a living or business out of it.
You should look into to planting Daikon radishes as a fall cover crop. They grow deep taps that break the hard pan and bring nutrients to the surface via tilling under in the spring. While improving drainage. Plus the are are very tasty when harvested before winter kill,
Looks like its growing in pure coco. not a problem. Which means its needs to be fed a light, complete diet right from the start. General Hydroponics Floranova Grow, 7-4-10, start to finish works very well in coco. Its starving to death.