Would one of these lights be enough for a 2' x 4' tent? Maybe 2 plants at most in there. LED Kessil KSH150P Purple Kessil Lighting- The Spectral Revolution
Question, if this is a guerrilla grow then why only two plants in a 2x4? You can easily fit more and large ones at that. Just curious that is all.
I would go for magenta if its going to be your only light, the magenta will give you a better yield imo and 1 kessil is only good for a max of 2' x 2' and that would be stretching it, I would recommend you get a panel of some sort, it will give you better coverage for that kind of area