I have a Current USA sattelite plus light for freshwater. I got it on sale at amazons black friday last year and its nearly doubled in price since then, but it has way more settings than I need. I use the daytime natural cloud setting most of the day and the lights vary in intesity looking very much like clouds blowing through the sky, I'm sure it's more appealing to me than the fish. It has 3 different moonlight settings and after the evening feeding I put it on the brightest one which is a hint of blue but mostly very dim white. It's mostly so the light isn't so bright as the rest of the house is dimmed for evening, I doubt the fish care, but it does look somewhat natural and my catfish gets more active while I can still see him.