I had to re-stack all of my live and lava rocks after my sleeper goby dug a HUGE tunnel under the bottom rock, causing an avalanche. He also dug up this plastic plant I use in the corner of the tank and half of a terra cotta flower pot that I used to make a cave out of. Basically, my goby trashed my tank. I also got to do all of this work with a rather annoyed puffer following me around (she doesn't like my
hands in her
tank, you understand) trying to bite me the whole time. What fun!