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You are viewing a single post made by Lucy68 in the thread called Orchids under grow lights? Need opinion..
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Feb 5, 2024 7:49 PM CST
California Central Valley (Zone 8b)
Region: California
Or we could have a conversation about growing Phalaenopsis under lights...

Jared, for comparison... 10,000 to 15,000 lux may sound like a lot until you know the sun is 100,000 lux. 10,000 to 15,000 lux suddenly becomes a very small number. Before I switched to LEDs (when T-5 sunblasters became hard to find), I was using tubes rated at 6500k. Lights often come with descriptions rather than a usable light measure. What you want to look for are the words "Day Light" or 6500k or a 'lux' reading. Lights are also directional. You can move the plant (or the light) further apart or closer together to decrease/increase the amount of light. When I said my plants were growing under about 8000 to 9000 lux, that was at leaf level. You can also use the edges of the light - the most light is directly under the bulb but there is a fringe area just outside the direct beam of light where you can put even lower light plants. But this also means, whatever you are attempting to keep happy under lights much be directly under the lights, not off to the side.

One of the orchid growers in California gives this comparison: shade = no shadowing when you put your hand under the lights. Full sun = a distinctive sharp edged shadow. You want light that makes a soft shadow with no distinctive edges.

Have a nice evening.

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