Lighting and new montiporas

[greaps]

Hi, I have some ora red and green montipora's shipping in tomorrow, I am unsure on how to schedule my lighting. My tank is 24x24x20T

I have an arctic T247 120W Led, hung around 8 inched above the water. It has two channels, a blue channel and a full spectrum channel. How bright should I run these lights, corals are going to be placed initially on sand bed and eventually placed onto rock work 6-10 inches from bottom.

How many hours a day should I run my lights and at what power?

Thanks!

 

[greaps]

Corals came in, put them on the sand bed, 18 inches below water level, light is at 40% blue, 40% White, we shall see, pieces look awesome.