I have had these Mbuna for 3-4 months and never had a problem. Recently whenever I walk into the room they all go ABSOLUTELY INSANE!! They smash into the glass and rocks and I know they have to be hurting themselves. It is bad enough where im almost afraid to walk into the room to hurt them. The only thing that has changed was I turned the air stone off and has been off for about a week. They havent been hanging by the surface or labored breathing so I doubt they are related but that is the only thing changed recently. Any ideas what would cause the sudden fush scared syndrome?