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yeah, using a 6500K, or even a 3000K has proven very useful. Check out mothra's blog at frags.org for proof. Some T5s have such a narrow output (compared to halides at least... there not lasers or LED's) that your blue, aquablue, and actinic bulb combo may not leave you with ANY warmer spectrums to help 'pigment-up' many corals. It seems many corals see warmer light as an indication of how intense their pigments should be, so a single 3000K bulb in a mix of 6-8 bulbs isnt a bad idea. And FWIW, the look of using a 1:1 mix of GE 6500Ks (now a sun/midday bulb would be used) and blue+ bulbs is awesome, not to mention probably the brightest combo possible.
cgarsmokr,
what size tank? 6-bulbs over a 40B, or a 120g can change things alot. Also, do you like a bluer look, or a more daylight look?
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