I noticed my duncan covered in these brown slimy stuff and I tried to blow it off not realizing it was brown jelly disease and my coral died and I blew it all over my tank. Is it going to spread? Should I be extremely worried now? Over two years into the hobby and I’ve never experienced this I dip all my corals. I recently changed my lighting though and dosed some reef-roids which I won’t do again and maybe this is why or maybe I’ll change it back but this coral is kind of new and looked great before I woke up to it smothered in bjd.