Posted: Thu Oct 08, 2009 7:12 pm
Unless you have a large, agressive turtle that will move the heater around, or, if you have rocks in the tank that the heater could be hit against, I really don't think you have too much to worry about, especially if the heater is suctioned to the side of the the tank. The glass that heaters are made out of is a bit stronger than regular glass. A guard is nice, but not crucial.
"You become responsible, forever, for what you have tamed." -Antoine de Saint Exupery-