It's a nice plant, is that a auto ?
I think it's only fair if your going to try and epeen on me to note that my "very efficient 4-6 ounces" that your knocking on was pretty close to your "2lbs with 8 auto flowers". Just wanna make sure we are comparing apples to apples here. But lets look at it from a gpw standpoint and time. So 56watt cob is doing 3gpw in 80 days with no C02. In this post Czarstroke did just under a half GPW with 300watts total. So again my only point is wattage is not a great way anymore to determine the end weight. When your using old school HPS and do a decent grow you can expect what kind of harvest or gpw, with all the different led's on the market it's a crapshoot.
No. That was not an auto. That was a 4 week veg from seed gorilla glue.
And here's what a 2lbs harvest 4x4 with 8 autos in it looks like also...
I'm not here to debate about the efficiency of lights.
I started growing because I wanted to produce cannabis.
Not because I wanted to cruise a site about growing plants so I can show the world how well I understand photon interaction and my depth of knowledge on how all the available light spectrum specifically interacts with each cellular molecule of an organic structure during photosynthesis.
If spending 3 months of your life taking care of a plant to get 6 ounces under 65 watts makes you happy. Great.
Filling a shit ton of really large glass jars with really good bud makes me feel great.
So let's just both enjoy m'kay?
What I told the OP has been, and always will, be sound advice.