
Monkey Man
Super Moderator
... or even the same grower:Even the same strains, from different growers, can have different effects.
Light spectrum, duration, intensity, harvest time-of-day (most-potent just past the light-midway point) and of course harvest time (early, normal or late harvest), curing method and duration, nutrient spectrum, make-up (organic / inorganic) and dosage level, insecticide level and quality... the list is almost-endless.