I just got my first 2 Cichlids less than a week ago, they are Yellow Labs about an inch long put them into my 120 gallon tank. The thing I knowticed with them is that they do not like the tank light on and they hide away in their caves when it is on. The light is only 36W which I find strange as it is such a low powered light. Is this normal? Are Cichlids sensitive to light?