Hello 3reef, I've got a 55 gallon African Cichlid tank with two 6500k 48" T8 Bulbs in a fixture I put together (the old one blew out). I would like to try using a bluer bulb in the fixture to help accent colors but my local hardware stores (Lowes, Home Depot, etc) do not carry anything with a higher temperature than 6500k. I could go to Petsmart/Petco/LFS and pick up an actinic or something like that but that'll cost me $30. Is there a cheaper solution? I know for planted aquariums it's cheaper (and I the look better) to use regular 6500k tubes from a hardware store (for less than $10) rather than $30 for a "plant" bulb. Is there a similar source for higher temperature bulbs?