I did 24/0 then went into 12/12 no adverse effects.
I never topped the plants, and I got one female from 4.
It's now....... about 3.5-4 feet in height, it's quite spaced out due to bad lighting at the start, but it's looking very nice.
Although there is literally no smell what so ever, so maybe its just because it's one, maybe it's because my doors are open for my wardrobe, I'm not sure, when it get's hot in there I can smell it.
Only problems with heat I have found is they need watering a bit more often, but not much of a big deal.
Thinking of taking down my wardrobes and actually creating a big growing area, using some thick mdf sheets, creating doors in them, making walk in wardrobes in effect.
then setting up some decent vent, because i dont wanna do it with my wardrobes.