When I had the CBB basically Mars Aqua, I ran it at 100% blues and 60% whites, so I figured with the new light to set them to 60% blues and 40% whites would be good. Well na, it wasn't. I wound up starting at 40% blues and 5% whites, these whites are super bright, don't know the PAR readings but you can just tell they're very powerful, as also proven by my melted corals.
Now it's rocking along at 65% blues and 20% whites and I'll probably bump both up 5% today after they come on and watch carefully how they respond. I can tell you this, my corals are growing so much faster than with the CBB it's not even funny. I'm so glad that I finally decided to get a quality LED fixture for my tank.
My lights were and are set to 13" above the water. Just wanted to warn you to be careful with them and hopefully you don't lose corals like I did.
I wanted to add I run my blues from 5am to 7pm and whites from 8am to 3pm. This seems to be working well for my tank.