Karen wrote: "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." In one tank I use 6500K compact fluorescent bulbs. In another I use 6500K CFs together with a mix of Tritons and Penn Plax Ultra Tri-luks. Steve