That's proof that they apparently don't need much nutes (depending on the strain probably) I can't image if you had hid or leds in there, makes me wonder what you would of yielded then. I don't use much nutrients at all either just Fox Farm trio with AN Big Bud and AN Cal-Mag and AN Sensizym, that's my complete nutrient line up. I haven't weighed yields but I grew Black Skull Diesel-Matic freebie that the top cola was the size of my fore arm (the wide part of the forearm closes to your elbow). But I'm thinking switching to Remos whole line. I'm a big fan of Remo (himself)!!
Cheers bro!