Quote Originally Posted by bobhead
You have seen noticeable differences with that method?
Nah, he's just an experienced grower trying to get you to experiment for him. :wtf:
There are seed selection techniques, trimming techniques, chemical growth restrictors, twist-tie training techniques, etherial "moon" techniques, prayer, numerology...just to name a few. :thumbsup:

Different strains have different growth habits.
Usually:
Sativa dominate hybrids will have a more radical PMS cycle early after the switch to 12/12. (Pre Motherhood Stretch) After the initial vertical stretch, they'll slow down to a crawl and start filling-in. Slow but steady.

Indica dominate hybrids will have a more compact PMS cycle, and will fill-in rather quickly.