Rich Ross

Holy crap! It seems it would be easy to stop them, what with no legs.

Stop using the top of your tank as shelf, use magnets instead

From Reefbuilders

Most reefers have a ton of tools laying around to manipulate corals, make frags and retrieve lost items from the bottom of the tank. Tweezers, hemostats and clippers have become an important part of reefkeeping. Annoyingly, they are often kept out of reach, or worse, rested on top of the tank where they can rust or worse – bumped into the tank breaking corals on their trip to the sand. A magnetic tool holder is a cheap and easy way to avoid these issues. The can be installed out of the way in the canopy or in the stand, keeping reefing tools secure and out of the way. I put one of these magnetic strips above my tank years ago and its one of the best things I ever did. You can even slap a small metal wire basket to the magnetic strip for storage of odds and ends like superglue and algae scrapers. There are a variety of magnetic tool holders available – click here for the one pictured at right.Keep your metal reef tools handy and out of the way