As a matter of fact he is messy. Always digging on both corners of the tank, and burying my polps in the sand bed. I think he's a menace and i rarely see him, unless i take a peek at night with a flash light. I think after experiencing his digging, one is enough for me. Thanks for the advice guys. Appreciate it.maubee how is your pistol doing???? it's messy like mine ??? how ofter do u see him??