Originally Posted by fbm
I use visitherm heaters. I had a glass one and it broke. So then I switched to the stealth one (aluminum covered in plastic, won't break), well 2 of them. They hold temperature real nice, I fluctuate about .6 degrees a day at the worst, most of the time around .3. Plus they are cheap and have a lifetime warranty.
Just a FYI, I had a Visitherm Stealth heater and it did indeed break. The outer housing separated from the control and shorted out in my tank. I hope that it was a freak thing, but I just wanted to mention that they are not unbreakable.