AI Prime 16

[Jono562]

New to the thread and new to reefing. Just cycled a 25g AIO tank. I'm running a AI Prime 16HD. My question is about height of the light from the water. I dont have anyway of measuring Par. I'm running the Nano-Karen settings (which found today are the BRS Radion settings) but that's not important. Any help would be greatly appreciated. TiA

 

[Spare time]

I like to mount it no more than 12 inches high. I prefer to max out all of the first 4 channels. Is this a lagoon 25?