I have a 27 inch razor led light system an was wondering.. is it the blue lights or white lights that make corals grow?

So thanks in advance for all input.. I have had 140 gallon reef system up and running for about 8 months I have learned a lot from my mistakes... now my question I am considering switching to led lighting because of heat and efficiency. I am currently run a 6 bulb t5 48 in fixture and a 36in t5...

Can someone school me on putting together my own led set up for a reef tank. I can not go out and spend 200 - 800 $ at once. I was checking out rapid led - I am confused, are the par 38 bulbs good for reef tanks 24" deep. I would like to own a clam. Can buy these and put them together...

Upon review my local reef clubs site I came upon to great sites in which you can purchase affordable led lighting. Title:A great find at IKEA! Moon lights for the 210 http://dfwmas.org/Forums/viewtopic.php?f=2&t=54201 Title: Sick LED Lighting Pictures - lots of pics...