I’m a newbie, I don’t understand what’s happening with my heaters. The Top Fin one in the picture, the bottom is all white, did it explode? It seemed to be working ok then the dial for changing the temp broke and I noticed it was like this. So I took it out.
But my other Aqueon 50w heater is in the tank now and it turned white on the bottom similar to the other one, did it explode too or? It seems to still be working which is weird? I’m so confused, what am I doing wrong