Quote Originally Posted by psteve
Any experienced grower using standard growing methods explained on this site should be getting +/- 1 gram per watt. If you're a master grower, maybe more. If you have to ask, probably less.
but all depend on dimensions of growing area and equipment used in that area and how many plants are in there ?

someone can have 20 square foot but no money to invest in proper
lights for that area . so he/she growing with lights witch he/she have . then grower ( i think ) cannot get +/- 1 gram per watt or ?