I just purchesed a Radion xr15 blue to upgrade my frag tank from a cheep amazon light. The tank is a 10 gal. tank (the light will go to my 48x24x16 when build is done). I am not sure what to set the % to I know it's way to strong and don't want to heart my corals (zoa's, torach's monti's, and mushrooms). any suggestions