i have a blue maxima clam, its about 3 inches long, why is it that when u look at it from different angles u c different colours?, i look at it from the the top through the top of the water and its shining blue very bright metalic, but from the front view of the tank it looks almost purple, i have a 250w M/H 14K with actnic supplement, the clam has been with me for around about a week now, am i being impatient?