Ive been Googling this and the answers so far - as is so often the case with our hobby - are all over the place. I am having a hard time telling if there is any real science behind any of these answers or not, but I trust you guys more than other sites, so Im going to ask you guys for advice
Some people claim you can go to 12/12 from seed.
Others say wait till after you see pairs of leaves, or three or four or five nodes etc.
Others say wait till you see pre-flowers.
Im having problems with my roots seriously outgrowing the space in the root chamber (HPA) after 5 weeks of veg, so I really need to start sooner than that. Im thinking two to at most 3 weeks is going to be it if I want to keep the roots happy and not crunched in or eating my spray nozzles.
I would like to hear from you guys about the pros and especially the cons of flipping early, and how early is truly safe and/or wont hurt final product too much.