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>I *think* it's blue light that makes red pigments. That's why I was playing
>with Chroma 75s. Truthfully though, the only decent amount of red I've
>seen in plants was where they got some sunlight. I've never played
>with Mercuty vapour of MH lamps which I guess would do it, too.
You should see my R. macrandra. It's so red people don't believe that it's
real. I grow it under a combination of 5000K and 6500K T-8's, 3 w/g.
Steve Dixon has bright red macrandra too, and he also uses fluorescents,
though I don't remember what kind.