the dude was trying to help.. You along with me, along with many other growers have many questions, and the basic ones were already answered by spandy.. dont over think.
"what would be the idealized setup for a small area 400 watt light?
what about a 150 watt light
is it true that you want 50 watts per square foot? that would mean around 1.5foot by 1.5 foot for the 150watt light, thinking of scrogging a plant and flowering under the 150 watt light. Would this be the best way to achieve a high quantity of high quality smoke? Want to dial in big paramters that would lead to getting 1 gram per watt. "
it seems like your objectives are mixed, if this is going to be your only grow EVER, sure, i hope you get 2+ grams per watt good for you! smoke it while its nice and fresh, straight off the plant..
OR, focus on growing a proper plant, with your limited space.. figure out how to harvest a healthy plant, then you'll figure out how much space and light you need for some yields..
take what you can out of advice, you dont need to follow anyone to a T. but use our input.. appreciative responses will get you further than snoby remarks, good luck to your lifestyle..
you can harvest a healthy looking plant, but that doesnt mean what you were doing with the space that you were working with was in any way efficient.
Mixed objectives? Figure out how to harvest a healthy plant?
Multiplying ignorance by a number of square foot may increases yeilds, but not efficiency. which is my objective. the best method for efficient production within a designated timeframe ()