Nothern Lights Grow - How Tall?

Need advice on my first Northern Light grow ... this "expert" on YouTube states 6 ft for maturity? Can anyone verify this? http://www.youtube.com/watch?v=BB1rpV1HVas

I grow 12x12fs so mine are usually quick and a little less yield. I did 2 NLs a while back only 2 I've done.
I messed up and tried a test on them only got 3Zs total,I will soon start the other2.
I don't know what he's talking about and they'll mature real short,usually get more if they tall.
GG & HY to you!

An "expert on youtube" was your first clue. Everyone on youtube is an "expert". Your plants will most likely double in size during the stretch. Figure out your desired finished height and flip accordingly.

I'm growing 2 NL ad we speak, switched them over to flowering at only 10 inch as I have limited space and they seem pretty mature to me

I had a similar question about growing NL in a confined space so I just asked the breeder. He basically said there will be some variation in height but generally, a 3-4 week veg will give you a 2-3 foot plant. High quality, intense light will help to keep them short and bushy.

Thanks for the feedback ... I think I am going to veg out to 3ft in hopes of a 6ft or so finalized flowering plant. It is going to take a while but I'm not in a hurry. I'll update this thread in 5 months or so.

5 months to get to 3ft...I give you 2 months to get to 3ft if that. But if I were you I would train them instead of going tall you will be glad you did but that is just my $.02