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-   -   10K metal halide bulbs for orchids (http://www.orchidboard.com/community/growing-under-lights/61357-10k-metal-halide-bulbs-orchids.html)

jcaballero 07-27-2012 11:47 PM
10K metal halide bulbs for orchids
 
Can I use 10K metal halide bulbs for my orchids? I know that for plants the recommended is 6700K, but I was wondering if this would work.

Ray 07-28-2012 07:05 AM
That's an aquarium bulb, not a plant light. The spectrum is supposed to simulate sunlight about 15- or so feet underwater.

It's probably usable, but 1) there will be a lot of wasted energy in a part of the spectrum the plants don't need, and 2) I'd be concerned that the excess blue might negatively affect flowering - I don't know it will; just a guess.

jcaballero 07-28-2012 05:46 PM
Quote:
Originally Posted by Ray (Post 513552)
That's an aquarium bulb, not a plant light. The spectrum is supposed to simulate sunlight about 15- or so feet underwater.

It's probably usable, but 1) there will be a lot of wasted energy in a part of the spectrum the plants don't need, and 2) I'd be concerned that the excess blue might negatively affect flowering - I don't know it will; just a guess.
can i use some 4000k bulbs? I wanted to get 175watt MH bulbs that are 6700k but they are too expensive.


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