My Sebae has moved. We got him about 3 weeks ago and was bleached. He has made a turn around and has colored up to the proper dirt brown with purple tips. Two nights ago he decided to move about 10 inches from his spot in the sand bed to a spot wedged in between 3 rocks. His foot is about 4 inches from the sand bed but he looks happy and mouth is closed. I have 250w radiums that are 2 months old at the most. So should I be worried that he moved to the new spot in the rocks? tank is 24 inches deep.