Growing on rock-wool it should not be too hard to break the 1 gram per watt ratio. I’ve done it with only twelve plants.
But this perpetual method in full throttle, will housevest approximately 90 cuts, which can be harvested every three weeks. So that means 450 grams when they yield 15 grams each, from ‘only’ 250 watts. That is almost 2 grams per watt, which you yield every three weeks instead of every three months.
But that is only theorie, for me at least. Others have already done it and with more plants so more grams per watt. They ain’t lazy like me is, so i have to find a method that works for me and yields pretty nice! I don’t expect to yield as much like those growers that cut as we speak so to say!