does this look like brown jelly disease? In the white lighter square where my stylo and sunrise monti meet. It has receded quickly into that whitish oblong square with a brown jelly like matter around the edges and it has progressed quickly over the last two days. I've blown off the rock and it comes off, but don't want to spread this if it's BJD. These are fully encrusted so i can't remove them to treat and not sure if should treat the tank and what treatment might work.
any input is appreciated
any input is appreciated