These
http://www.marineandreef.com/Coralife_A ... s08610.htm
and these
http://www.fishsupply.com/slesu-58120.html
i have the 48 inch in my tank is its growing algae like crazy (at the bottom of the tank too!!)!!! with the blue bulb and the 6700K bulb
one on each side of the screen