medical_shed said:When people say GPW isn't a good measure of effiency it's because it doesn't account for the total time of the grow. You could veg for 3 months and flower for 2 and hit a gram per watt someone else can veg for 3 days and flower for 2 and hit the gpw, it's obvious one spends less money on electricity for the same amount of bud. Grams per kilowatt hour is probably the best measure of effinciency. Personally I don't even have scales
If you veg and flower in the same area then you're not an efficent grower and need to build another medical shed.
The growers that have to veg a certain strain for 2 months in a separate veg area but still veg for 0-2 weeks in their flower rooms and pull a GPW have just as efficent rooms as those who grow Diesels and Hazes and have much lower vegatative requirements to produce a heavy yield at the end of bloom.