What differences in growing style are you making to favor 'grade A smoke' over 'huge yield'? In my experience, the one and the other tend to go hand in hand for me. I don't yet have as much experience in hydro as I did with soil though. I'm still learning a lot about hydro growing tricks.
I will be strongly lolly-popping this strain, and won't be growing it as large, i don't have enough veg time, so the plant will be more manageable and be able to breathe better with more room and circulation, and having my nutrients pushed to my growing tips by lollypopping, should improve my canopy level, i'm watching this strain growing elsewhere, so i'm learning first hand what needs to be done.
My last grow i was a bit lazy with under the canopy and ended up with alot of popcorn, needless to say, turned it into hash, soo no loss there, i got over an oz in hash now, and plenty of oil, so all i'm after is some more quality herb, this strain cost me $200 and i've never paid for a clone in my life. i was very serious about buying this, and have been searching for a suitable clone for my growing area, something that is ore to my liking, the last 3 grows have all been a learning experience, and to build enough smoke to last. i have accomplished this easily now, and will put all my time and care into this new JACK X the quality i have seen from this erb, is completely out of this world, i have yet to see a strain like it, i have searched all over the net at skunk x's and jack x's and found nothing that resembles what i'm seeing grow.
I will cut for clones and top at around week 4, just before maybe, as i think i'll be looking at around 8-9 weeks flowering, maybe less, it could be a fast finisher, i'm yet to see.
The plants vigor could look a little better at this point, i'm thinking strain related, not environment, health is great..