Quick question, anyone have experience controlling hydroids in their tank? My clown tank has some rocks that are literaly covered in them. I tried soaking the rock in fresh water and scrubbing with no luck, Im thinking blow torch at this point. Id like some form of biological approach if possible. I read somewhere that a CBS (Coral Banded Shrimp)will eat them but they also have a taste for Zoos, which I have plenty of in this tank. Any suggestions welcome.
Thanks!