So I've decided to get one of Marineland's older heater models, the glass Visa-Therm. However, as I know I'm still running a risk of it exploding, how great is the impact? If it shattered the glass, would it be enough to send glass flying at me? My tank is right next to where I sit to use my laptop, so I do not want to get a heater if it's going to risk my life. I may be being paranoid, but learning about the recent Marineland fiasco I can't help but be concerned.