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Light spectrum

Hi all, I only recently subscribed to this list (great info) and have a question about flourescent bulbs.  I have read that "most" aquarium plants prefer a buld with color temp less than 5300-5400K.  But, many people on the list seem to have great success with higher temp, bluer, bulbs.  In the past I have used 5500K metal halide which seemed to work well.  Do you think that 6500K flourescent bulbs are too blue for most freshwater plants?  Or, how about a mix of Chroma50 and Chroma 75?