I study chemistry and nuclear physics; I also spent 9 of those months working at a hydroponic shop and obsessively researching the craft. I've also obsessively researched microbes for soil; hydroponics; fungi growing; beer brewing. Put all that together and you can build a pretty kickass environment for plants to thrive. Me saying that i've only been growing ~2.5 years was mostly just saying that i've not had the opportunity to grow a bunch of different strains
And the difference in effects (in at least this strain) based off the light is not something I even close to expected; it was so apparent that it revealed itself without me searching it out or even considering its possibility.
I imagine your COB lights have similar spectrum of white light (Especially if they are CREE); the LEC 315's are pretty much white. I used hortilux HPS when I grew it under HPS; which was a heavy red light with a good bit extra in blue. I think full spectrum (white) lights just kick ass in general.
But maybe thats completely full of shit; I definitely wouldnt draw a conclusion that every white light will make effects more stimulating based off my 2 harvests with HPS and 3 harvests with LEC.
That being said; these LEC's have impressed me a loooooot. I got my fixtures for $315 each (which is a steal) so I got lucky there; but I sold probably 50-60 of them over 5-6 months. Any1 who can't grow well with these lights is doing it severely wrong hah
Also bud; I gotta say that looks like a dank spice rack