grow tent help how long will i veg clones

i got a 1.5m grow tent my first tent would apreciate some help plz i grew an ak48 mother took 16 clones for my grow tent ,they all ruited in 1" rockwool cubes then i transplanted them into soil how long will i veg them for b4 i start to flower. my grow tent is 2m high so only want each plant to grow to 3 ft at max

No longer than a month probably, and you will want to top them. Have you looked at or thought about trying a screen of green?