How tall were your plants before you switched them over?
There's a story to that... lol
I originally bought 4 clones of some Scott's OG, kept three and gave one to someone to keep a mother for me. Two cycles later, I decided I wanted to do some breeding... The plan was to flip a GG #4 clone to male using the colloidal silver method, and then breed it to one of my Scott's OG females. Unfortunately, the foster parent of my mother plant hasn't been taking very good care of her, and gave me some crap clones that all died.. Needing to stay on schedule I ended up grabbing 3 OG and 1 GG#4 clones from a friend, with hopes I could get at least just one healthy clone from the Scott's OG. When that fell through, I decided to say F' it and grow all four clones out, and revisit breeding next cycle. (Hopefully I'll be getting the mother back soon, if she still alive.)
With that said.. after FIM'ing, and just over three weeks of veg with the new light, I had 4 little bushes that were quickly out growing my closet. Instead of yanking out one or two, I went ahead and just pushed them up into the screen, have them a couple more days of veg, and flipped to flower. So to answer your question of how tall they were, probably close to about 10 inches or so, with a canopy of about a square foot each.