I've got a hexagon 32 gallon tank. I'm trying to find out about lighting. I have a fluorescent light 15 Watts, T5 rated. Is this too bright? Also, does it bother fish to have me turn off the light when I'm not in the room and turn it back on when I am? My tank is in the kitchen near windows so it won't get dark during the day. I understand about saccadic rhythm, but since they're next to a window it is still light. I think of it as if it is cloudy vs sunny. I do, however keep the light on when it gets dark until I go to bed. I find my neons don't hide when the lights are off during the day. Help.