audiosilence
Member
I've always wondered if it were possible or even efficient to stack lighting. Lemme give an example someone doing a small grow may use as many as 10 cfl bulbs to have ample light coverage. I was wondering if I have two LEDs rated at 500 ppm @ 8 inches, then, maybe I can gain ppm if the two fixtures are closer together. I won't be going for coverage by width only by depth. I was just trying to figure out: when used side by side how much ppm would be in the overlapping medium of light? Due to lights being angled not pointing just straight down.