my nano is a 28 G, the clowns are in love with the hammer they wiggle through it, have dug a hole in the sand below one of the branches and sleep in it's branches at night. But my hammer is not in love with them, it has gone to about 30% of what it was in about 3 mo. my blenny has a rock with several holes he loves to peek his head out of almost in contact with where the hammer, and where the anemone will replace it, so I am worried that he will get stung and eaten. Is there anything else that I could place there to make the clowns happy and keep my blenny from being eaten?