Need opinion with growlight positioning

[iamthat]

Originally Posted by Johndeaux22

Much of my collection grows under lights in my basement. All of the lights are mounted above the plants, and the only light from the sides is reflected from the walls. Depending on the plant, how it is potted, and how tall it is, I have as little as 1” from the lights. I maintain great air movement, and about 50% humidity in one space (mostly Cattleya’s with a few Australian Dendrobium) with temps from about 58-70 F, another space maintains 75-80% humidity with temperatures ranging from about 60-74 F, also with great air movement. My sunroom has no artificial light, but I get spectacular blooms from a few horrendously large standard Catt. hybrids in there. I’ve found that you can get away with a lot more light than you’d think if you maintain good air movement, and humidity. I do typically run at the upper edge of reasonable light wise, and watch for signs of burning - adjusting if necessary. Most orchid nurseries run much brighter and wetter than most hobbyists would be comfortable with FYI.

So if i position my growlight at 1m right above cattleya, i read 25k lux on the leaves. Also meaning them flowers will be around 40k lux since they are closer to the light. That should be okay right?