I just wrapped up my first grow of two NL autos under two MarsHydro 300s in a 2x4x6 tent. I'm gong to grow two more of these along with two Royal Queen Seeds Diesel autos. Should I add a third light for the four plants? I'm assuming the answer is yes, but just wanted to get opinions on the benefits of two versus three in that space.
That's actually what I was thinking originally but 4 seems overkill in that small space. They're rated as 2x2 per light but I was leaning towards adding a third just for more wattage and hopefully increased yield.