I have been growing cattleyas under lights for 3 years now. Last year I switched from high pressure sodium to metal halide system. Now I use 600W lamp 12 hours a day with that my plants seem to be happy.
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I have been growing cattleyas under lights for 3 years now. Last year I switched from high pressure sodium to metal halide system. Now I use 600W lamp 12 hours a day with that my plants seem to be happy.