Did a complete revamp on grow room. Last crop was so-so. I think u were aware of my heat problem. That has been corrected. But grow area is still very limited in height. Possibly 4?? from tank / plant to ceiling. Ideally I would acquire seeds or babies that grow short but I??m a coward to mail order.

What I have is what I will call commercial / Mexican. Here is the specific question ?? how much can I afford to top to keep them short and how long should I hold off before going 12/12 keeping in mind that I only have 3-4?? vertical before tying down or training is required? Babies are 22 day old.