Relax. It’s not pests and it’s not going to die. It’s fragging itself. I had the same issue and started freaking out too. It’s going to keep doing that until it literally drops a. Section at a time. I ended up getting rid of it because I ended up with dozens of toadstools all over the tank. I actually put up quite a few posts on it if you want to research it. Look up toadstool self fragging.