Lots of the information about growing orchids is extremely out dated using footcandles, recommending cool white fluorescent or HID lights, ect. Has anyone here experimented to see what the effect of far red light would be on orchid growth? If you had an unbalanced spectrum you might get leggy plants but combining far red with a light with sufficient blue light you may be able to enhance orchid growth. as epiphytes orchids may naturally enjoy far red and green because these photons penetrate deep into both the canopy and leaves.
idea from these videos: