Im not saying those yields are impossible, and for all I know you're being honest so i apologize for being suspicious if thats the case. Its just that, usually to hit over 2gpw it requires significantly more ppfd from your lighting and supplemental Co2, and a high yielding photoperiod strain. Very, VERY few growers here are able to achive that level of production, and the growers who can are using cutting edge lighting tech and Co2. And usually their buds look denser and heavier than the ones you shared pics of, no offense.
Using a
spiderfarmer 400w light over a 4x4 tray just does not sound like the type of system that will crank out 2gpw+, but ive been wrong before..
It was back in 1997 and her name was Heidi,.. it was a huge mistake let me tell you...