my gbta is acting weird. he has no color loss eats well. for some reason everyday at the same time he retreats into the hole in the rock where he hangs out. as soon as the 10k's come on an hour after the actinics it takes him maybe an hour or 2 for him to retreat then him comes back out towards the end of the 10k's and with the actinics on the night cycle and under leds he is huge and looks good. i do weekly 10%-15% water changes all of my parameters are good. i feed him once a week. its seems as he doesn't like the lighting. he is only 2 weeks old in my tank could he still be getting acclimated?