LED question

[Spotted]

OK so I'm looking at those Chinese led lights. The newer 212 watt version. The ones I was looking at has options as to the ratio of blue to white less. They have 2:1 blue lights, 2:1 white and a 1:1 option.
How would the ratio affect a tank? Which ratio would be better for growing corals and anemones?
Thanks in advance.

 

[Spotted]

Anyone care to comment?

 

[Smitty]

Look for at least 2:1 blue to white ratio. If you are able to separately dim it would be great but some of those units aren't able to do it.

I went with a bunch of 3 watt LEDs with 2:1 ration and for now, they aren't separately dimmable, but I like the color which is really close to what I had with my T5 lighting, just a LOT better PAR with optics on.