Now that you mention it...i have always noticed the odd "slug-like" critter here and there in my tank but lately i havent seen any at all (within the last few weeks). Could these be
nudibranchs and is that whats causing my xenia to do that it's doing? and if so...how to i get rid of them?
or could it be the "peppermint shrimp" that i have munching on my xenia? It turns out i was tricked..again and the store sold me a camel shrimp and not a peppermint. I hear that they will eat corals...but there arent any huge abrasions or anything, just a few black spots...kinda like there would be if the "petals" got burned and are charred a bit.