Given that I won't transplant the plants into bigger pots, as I want to keep them small and rootbound, when should I induce flowering so that the plants use the size of the pot the most efficiently?

Meaning they won't either be too small or too rootbound at the end of the grow.













Also, I have been fertilizing 2 of these but they are not getting any greener so maybe the solution is too weak and they need a stronger dose.

How long does it take to see the effects of organic liquid fertilizers?