I think i remember from my freshwater days that natural sunlight can cause excessive algae to grow in aquariums. Is this true for SW tanks as well? In the mornings, the light really poors through my living room windows and hits my sw tank for about 3 hours or more every morning. I've had a lot of brown looking algae problems and i've tried to combate them with mild sucess. I'm wondering why i only get this nasty brown algae and not the cool splotche algae i see in a lot of other setups on this forum. Is the sunlight the cause?