When to start feeding clones?

Hey guys and gals,
I purchased some clones that are about 4"-6" tall. Usually I get preteens to save me some time and electricity bill money so Im not sure when I can start giving them nutes. Few are still in shock from the transplant so I have been just misting them a few times a day and have a clear glass over a few that wernt yet rooted that is helping them perk up a bit.

My question is how tall should I let them get before I start feeding them my Fox Farm trio?

707 soil grow
5 gallon pots
2 hoods with 1000w HPS lamps but I have both ballasts turned down to 400w

Also when can I turn the wattage up to 600w? I don't want to stress the little girls more than they are at the moment.

Any advise will be helpful

If you just transplanted into 707 and they are that size then I wouldn't even think about nutes for 2 weeks or so. Kinda depends what size pot you put em in. I'd give it a week to bump up to 600w especially if these were propagated under cfl or T5's.

I transplant my rooters Into 707 when they have ample root system... I don't feed w any nutes for 2-4 weeks (depending on how the plant looks) my ak xtrm clones needed to be fed at 2 weeks this last time hope that helps

Feed em when they tell you they're hungry. You picked a good soil and nutrients for your plants. Sounds like you're setting yourself up for some nice smoke this year!

Thanks guys! Much appreciated!
caherbgrower: Ya this is my second run in a couple years. my first one I did the same way and they turned out really good. They were Black Cherry Soda. My first time growing and seeing this strain in person and it was amazing! Wish I could do it again but my clone connect fell through so I switched it up to Cataract Kush this time.