I have used this many times trying to get it right. It really helps controll the stretch on sativas. But the problem is you are manipulating a plant to do what you want. For example a short stout plant that doesn't stretch will not like a dose before it even goes into 12/12. It might be better to let the plant build it's stucture on these type before using it because it stops them in their stracks when used as directed and burns em pretty good too. On my sativas I like it because it brings the bud sites closer together during the stretching period but doesnt stop it completely but I used 1ml/per gal on the day of the flip and again 14 days later and this seems to work for me.. Buds were bushier and closer but this stuff takes a lot of trial and error with each strain. It will burn em if you are not very careful. Don't use with other ferts at the time and maybe raise the light a bit too. Thay are gonna feel that shit.. HAHA
As for speeding up the flowering time...Gravity with
Bushmaster will do this. I didn't like it but my motto is "the first one done is the worst one done" so you might like it.
Good Luck. Hope this helps ya!:cool0044: