heaters exploded

Lesson learned the hard way, they were not out of water completely, not even half way, but I think you guys are right about them overheating. I bought a submersible replacement so that it wont be exposed even if I do 50% water change.
 
they were ut of the water...why didnt you turn them off?


They weren't completley out of the water, and amongst all of my exhaustive research, I guess I didn't read about heaters enough. If I knew better, I might not have posted the question in the first place.
 
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