My fastest and probably strongest strain I grew was GHS Lemon skunk.. started showing some amber trichs by day 50 and was close to 50/50 amber by 55 days. I have seen a lot of the other phenos take up to 10 weeks in other grow journals. My pheno was the spicy smelling one (I've heard there are 2 main phenotypes) Didn't yield huge buds but a lot of very frosty solid smaller buds.
The fastest strongest strain is from a domino's mexican hot,
review:
Aroma and taste=stinks like shit, a wall of stink 10
speed: can be over with in seconds, must stay near toilet untill done 10
potency: there is no doubting the power of the jalpeno chilli's
Visual appeal: the shitter looks like someone has sprayed the place with brown slime 2