I kep these guys a few years ago. The most important thing in my experience was a good close fitting cover for the top of the tank. I've found them many feet away on the floor, escaping from holes left in tank strips for heaters. Tight lid. --------------- See http://www.aka.org/AKA/subkillietalk.html to unsubscribe Join the AKA at http://www.aka.org/AKA/Applic.htm