Carmel has been hitting his head on the glass and he does it to much. I am afraid he might get brain damage and go mental or something. Should I put paper over his glass walls or just leave him hitting his head when he sees something move?
Maybe he has hit his head one too many times and has gone mental already

just kidding. In all seriousness i hope he is ok. If my betta was doing that, i think that i would just laugh and leave it be, i mean if hes really in pain i doubt he would do it over and over. My only other thought was maybe the tank is too small, but i am sure that you have a tank with adequate space...i dunno sorry
Good luck,
Drew