looking for input

this is my first time growing and I'm using hydro to boot. I have an igs drip system which is 3x3 and holds 20 1 gallon pots with a 1000 watt hps and a couple florecents on the sides. right now i've had them on 24/24 for exactly 3 weeks.. from my knowledge their looking great all a little over 1 foot and fairly bushy.. i was planning on changing the resevoir today adding ionic boost to the solution and cutting back the light to 18/6 for a week and then 12/12......I only have 4 feet from top of pot to light and want to maximes my space to its fullest.... i will add pics so that you can give me the best critizing possible if i can find out how too
- how tall should i grow them before flowering to maximes space
- how well are they doing/ am i doing anything wrong
- how much am I expected to yeild

photos needed or its impossible to answer

well my plants are doing great really healthy bushy and big and i changed them into flowering tallest was 2 and a half

could you figure out how much i might yeild with ruffly 15 females or more under a 1000 watt hps???

im thinking around an ounze per plant give or take

dude ya do really need pics on em with something like a ruler next to them

even then you can't estimate dry bud by the plant it isn't that easy some bud is more compact, sticky or tight then other bud that may be loose and dry

flower now, as for yield i would expect at least 1-1.5 pound (450-650 grams) given the fact that you grow in hydro under a 1000 watt hps candle!

NGOS :)

ok pics will be posted tomorrow.......