I'm cleaning the tank this morning and I have this slime like substance that is partially covering my devil's armor zoas. I don't see it anywhere else in the tank. Any idea what I should so about this? I did a little reading and I could improve the flow where they are, the other potential issue is that these are in my temporary frag rack in my display which is also where my clowns like to sleep at night. If it's a foreign substance, I'm considering a diluted hydrogen peroxide bath. I've had these where they are for about 3 months.