I started 12/12 already and I sprayed some superthrive onto em which seemed to help some.This week I just regulated the ph with nutes. This weekend I'll start flowering nutes...I'm running out of space lol
those things are gonna get big if you just started 12/12.
also now is the time to take clones... its super easy just throw a cutting in some hydroton and make sure the water level high enough that it is barely touching the stem. i dont use hormones or anything. and a 23 w cfl will veg 1 or 2 really nicely. then you can look for a keeper