I have two led lights from marineland. They are both 36 inches long and can pull out to 48 inches. My aquarium is 100 gallons and is 48 inches long. The two lights have 60mW LEDs that give off 600 Lumens. If I used both lights at 36 inches (have them overlap) would that be too much light for my fish aquarium? Or should I just use one light and extend it to 48 inches? Thanks!