Lighting height?

[jonleeroyix]

I have two 160watt 16000k razor r420r led lights on a 6’ 125 gallon tank. Does anyone have any experience with these? I can hardly find any information about em. I’m trying to figure out how high to hang them above the tank and what settings to use?

 

[jonleeroyix]

I’m mixing up more water right now that’s why it’s half full haha