I have these small (about the size of a large grain of rice)members of the sponge family growing profusely all over the piping in my tank and inside the sump. They are going to start plugging up stuff I am sure. I read there is a nudibranch that eats them but I have no idea where to get one. He would have to be one big nudi to handle all of these.
Any ideas how to control these things???
Any ideas how to control these things???