ok now I have another question, at which point are the lumens cancelling themselves out? like say you have to 400 W side by side, part of the plants get exactly the same amount of each light ,... can you say it doubles in lumens?
I have 2 ufos as side lighting, if I put my hands in front of the HID, I cannot see the red or the blues from either LEDs, is this light still doing it`s job?
now say you have 4 400W side by side forming a small square, can you say you have the same lumens as a single 1600W bulb?