The CSL moonlight fixture is very well made and CSL is the leader in PC
technology so the light should give you hassle free operation for many years . You will be able to keep a wide variety of coral under the light but tou are limited. I would stay away from SPS
and clams. You can pretty much keep any softy except for maybe a yellow leather and almost all of the LPS
. If you have the room i would run both lights. You already have it might as well use it! Those moonlights really look awesome at night don't they?