Check doctor bugby’s information on co2. It’s pretty illuminating. I always used grams per watt for my yield comparisons. I usually averaged .75 gpw. BUT I always included time in the equation. Lemonade joe made this point about 200 posts ago. Perfect no… pretty good assessment… you bet your ass. I ran a super tight 59 day flower cycle. Day 59 was also day 1 for the next set of clones. This got me an extra harvest every year…which changed my gpw…a lot.
I Used the term 1000w for my hortilux bulbs. Wall /fixture/cats??? I dunno. It was a way to benchmark me against me, and others who used a thowie. Watts, kilowatt hours, ppfd, dli??? Pick one they are all measurable commodities. Now …you have a “yield”… that cost you “X” …to produce. Dry smokable weight is the true goal here. Not canopy, not wet, not roots. It’s a fair way to estimate your cost of production as it pertains to each light.
Now you have to think about soils , nutes, pest control, and all the other ancillary things that go into the overall cost. Not complicated. Not perfect.
And just so we’re clear here this is one guy’s opinion and I’m not looking to argue with anyone about it. This way has worked for me for a long long time.It’s taken me from a field grower in Maui to professional status over the course of 35 years. Do I consider it some sort of panacea by which all grows should be proofed NO. Is it a good way to judge your abilities against yourself and others in similar situations I think it is…I’m sure there are far more scientific ways to do true analysis but I think as a rule of thumb it can serve most growers well. hope this helps
