lve never weighed what l pull out of tent, and it goes real quick, never grew for weight either, but a 4x4 should yield between 1 and 3 lbs, 2 being average from everything lve read, my crop will be lower this crop due to low ph, but under a lb ld seriuosly be looking for better genetics. Just an old mans opinion, we all have one, much under 4oz a plant is a failure to me, unless conditions dictate otherwise. Or strain is low yielder like a heavily sativa dom plant but they get heavy too when allowed to flower out. I dont think these estimates are unachivable and would expect the 4lb mark to be hit by more than one grower this year. Not me but someone who has grow tuned right in. I dont push for weight but might start to after your post, thanks. Best wishes in your grow.