What do you guys reckon how big they'd get - height, yield etc. - if I flipped them to 12/12 now at exactly 3 weeks? I'm of half a mind to give them another 2 or so, but at the same time I'm keen to see what they can do in 9 weeks total - I'd leave them topped once with 2 sides.
If they are sexually mature, then you can flip them and flowering will begin. As long as you have the first pistils go ahead, Usually plants reach sexual maturity after developing 5 nodes, yours look like they have 3 or 4, can't really tell. If you flip them before that, they won't begin the preflower stage until they reach said point.
Nice looking girls they look really healthy and strong .. The heat probably coming from them being in flower themselves .. ? Going to follow along see how they turn out in the end .. Cheers
If they are sexually mature, then you can flip them and flowering will begin. As long as you have the first pistils go ahead, Usually plants reach sexual maturity after developing 5 nodes, yours look like they have 3 or 4, can't really tell. If you flip them before that, they won't begin the preflower stage until they reach said point.