Eight week.
I probably did not mention this before: I would usually use a 18/6 or 20/4 light period, but this time I’m using a 24/0, not because I think it will yield more or be done quicker, but to prevent the temperature from dropping during lights out, which would rise the RH. It’s been a success, the RH ranges between 40% and 50%, even in full flower.
Day 52: I guess when they say that light mix soil only has nutrients for a week it is no joke, I’ve pushed the feeds strengths to levels that would normally burn my plants to a crisp when using complete mixes. The plants are drinking less than last week, since the 1 liter watering lasted 7 days, contrary to the previous 4 and the EC was 3.9 (1950 PPM).
Day 53: Today I did some maintenance. I plucked quite a few leaves, you know the ones that come off with barely a tug.
@Fast_Buds, I made a mistake when uploading the photos; from week 4 onward I confused the strain with another one. This is now solved and makes sense, since the Crystal Meth is the only one that could have the purplish / black colored buds.