When I first got moonlights (2, approximately four foot IceCap LED's), I ran them through the night.
What I noticed is that my fish weren't going to sleep....they stayed up. So what I did was to incorporate these two "moonlight" LED's as part of my light schedule. So I run these for one hour in the morning and one hour just before lights out to mimic daybreak and nightfall.
If you still wish to use moonlights to view your tank after hours, I would recommend not running them through the night....your fish need to sleep.
What I noticed is that my fish weren't going to sleep....they stayed up. So what I did was to incorporate these two "moonlight" LED's as part of my light schedule. So I run these for one hour in the morning and one hour just before lights out to mimic daybreak and nightfall.
If you still wish to use moonlights to view your tank after hours, I would recommend not running them through the night....your fish need to sleep.