Biggest yeild for small space?..

Hey everyone..
So Right now i have 3 plants growing in my tent, thay have been in flower for about a week and this is my first grow..
Ive come to realize that these plants are out growing my tent very fast and for my next grow id like to know if there is something i could do that would work better for my situation..
Heres some of my info and grow space..
250watt hps (soon to be 400w cooltube).
FF Soil and nuts.
Temps always 72-82.
water every 3-4 days.
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Assembled size: 90cm x 50cm x160cm (36” x 20” x 62”)..

Thanks for all the help..
Peace..

you still have time to try to scrog them if you think your gonna run out of room. or start to tie them down and do some LST on them.

I veged them for 3 weeks.. ALL are clones from the club here in bayarea California..
1.Sour Bubble 2.Grape Punch 3.Purple Kush..
I could do some LSTing But Im not so worried about the growing tall.. there too bushy for my tent.. sometimes i see pics where people have a plant growing and it looks like its just one big cola.. is that also a another type of growing?
You think id get more yield if i just grew one plant and supercroped it and just filled out my tent with one plant?

start with more clone's and tell them to flower sooner. sea of green style.

some strains will work better for this style of growing based on the size of the leaves and the amount of side branching.

tonight my wife and my brother helped me trim up my harvest. i had 25 plants in a 3'x3' tent. 10 headband kush and 15 blue mystic. i veged them for 2 weeks from when i took them out of my propogator.
the result is several thick spears of bud about 16-18 inches tall, just like you decribed.

i would recommend making a seperate area to grow a mother plant or two.

p.s. i refilled my tent tonight with 10 mazar-i-sharriff 10 sugarmountain, and 5 sour diesel. i can't fucking wait to smoke this blue mystic. it is by far the whitest thing my growroom has ever turned out, and the smell is in-fucking-credible. ...it's like the pure essence of ground-up baby angels mixed with berries and fruit punch, i can't wait to smell it once it has had the time to cure.

your 400 will perform very well in that size of space

haha nice.. Yeah, Id like to try and have them grow just one single cola or just a branch or 2..
Big and bushy is bad for my setup..

Or pick up tomato cages and train them to grow uppish instead of out, just another thought.