What are the dimensions of your tank?
If you end up making it a reef the blue really makes all the colors come out. Just the white alone gives everything a washed out look. Similar to if you have tried just a white bulb and mix a white and actinic together. If you are mixing white and blue leds together you will want them spaced fairly close, about 3" or less, or you see the individual colors. Close together the colors mix and give a nice overall bluish mix.
If you have the leds spaced close on freshwater I would go 2white to 1 blue, reef 1 to 1 and if they are not close only white or blue and use a florescent bulb to fill in the other color.
If you are patient on shipping q5 can be found cheaper on
dealextreme, about 4.50 each if you enter bulkrate ate checkout.
Honestly if I did it over, especially for freshwater, I would go with the cheap 3w leds on ebay. If you email the sellers for a bulk amount they will get them shipped to you for under $2 each. I picked up a 150lm white and blue and they measured about 2/3 the lumens of my crees, but visually I can not see the difference.
