Plus with a glass tank, you don't have to worry about melting the plastic with a heater, or bowing and cracking. I've used rubbermaids for fish and turtles, and I'm using one for a sump now, but they're not really made to be full of water. You can get a 10gal tank for 10 bucks brand new at walmart, to me its worth an extra 5 bucks for the security.