Hi,
Today I'm running 3 cobs(citizen 1818 3500k) at 218w with active cooling, that I bought a few years ago(4years).
I usually grow 2 autoflowers in a 2x2 tent.
I get around 1.2 g/w on this setup.
I am thinking about upgrading the lights, and I can't decide which light will be the best for this...