So i have a nice multi branch orange sponge. One of the branches has become thinner in the middle and looks to have a thin white mucas on the thinner area. Any ideas?
It sounds like it's dying in that portion. Mine did same thing you can use scissors under water and cut below the clear tissue. Hopefully it will pull through. Are you feeding it? And keeping any algae from growing on it? Could also be air exposure.. but unlikely if it's just in the center of the branch .