Just been to dam and the guy at the college was saying......

He gets 4-5 o a plant in 18 l pots in soil only veges them for 4 weeks. I have nt gt a clue about this but is that possible didnt no if he was showing off

Yes it's very possible. with MH during veg and a good light for flower and a dialed setup sure. Was he vegging clones for 4 weeks? I can't see it being possible from s33d

Yea depending on strain and other factors....I always seem to need 8 weeks veg to pull of that kind of harvest but I'm not into production much either. I always got to wonder with clones though when do you start counting days of veg? If it takes 2 weeks to root and another week to take off then 4 weeks veg we are up to 7 weeks already...

With my clones i don't count the rooting time, I count from when i pot them up. To me that's when veg starts. Jmo though
With that in mind i still think it could be done with the correct environment and a good 600w mh for veg

If you start with 11L pots for veg
and repot to 18 L a week before flip
4 ounces is doable

When I start from seed I consider veg start time when I have the third real set of leaves.

With s33ds i give them 2 weeks before i start counting veg time

I would say my average harvest, 30 days in veg, 1 topping, is 2.5 - 3 oz. A high yielding strain, I get as much as 4.5 oz per.

errrr piece of piss , ok some strains you will struggle with but commercial you should piss this , 18l is rather alot mind , if there was as an example cheese the real one not the seed attempt then yeah 4-5 is easy enough , of course this is also all light dependent , as a rule and understanding there rammed in and not taken as individual plants i used to stick 24 under 4x600w in 11 litres and would see around the 100 oz with a best of 136 , late in a 5th light would be turned on but only for the last 3 weeks or so
if this was hydro it would be so much easier