What the heck is going on

[Rygrun]

Something is moving through my zoas. It moves slow and kills out the colony. It don’t go from zoa to zoa but rather hops at random around the tank. All my zoas are doing amazing but the ones that are targeted die. If I had to guess I would say bacteria but it seems like that would effect more then one at a time and move from zoa to zoa. Any ideas.

 

[glb]

Have you dipped them?