I've always used a 2'×3'×5' Topolite and I always scrog. I've grown 3 plants at the same time and came out with just over 4 oz. with a 300w red led(not a great light). Up until my current grow, I used cfls for veg and 300w led to flower. Now Im using a 1500w full spectrum led for the first time. But click on my profile pic to see just what I've done with so little. XD