Aquabays.
I am thinking of using some of these 400w se aquabays units, over my tank.
http://www.marine-lighting.co.uk/
And am thinking of using a mixture of BLV 20k, BLV 10k and Iwasaki 6.5k.
But as i would only be able to fit in one 6.5k i was wonderin would the light have much affect on...