Today I was doing a weekly water change. I changed about 50% of the water. As I was filling up the buckets with fresh water for my tank, I heard a weird sizzling noise. I looked and my heater was sizzling. It also had melted the plastic plant next to it. It burned my hands to touch it.
It's a 100 watt Aqueon heater. I have a 20 gallon long tank kept at 78 degrees F. The heater is about 5 months old. Does it need to be replaced? Or did it just overheat since there was so little water in my tank? I've never had any problems with it before.
Also, does anyone know how the melted plastic will affect my fish? I have 5 glowlight tetra, 4 black phantom tetra, 3 otos, 1 dwarf gourami, 2 ADFs, and 5 ghost shrimp in the tank.