I'm using an unnamed (I think) 50 watt adjustable heater that came with my Top Fin 10 gallon Aquarium Starter Kit. I've only had it for a little over two months, and it still works, but I think it's making a buzzing sound? Every so often, I can hear it buzzing. My betta doesn't act differently when it buzzes, and it's been keeping the tank at a constant 82 degrees, which is what I want. It's still working fine, apparently, but it's buzzing. I'm a little concerned, but I'm not sure what to do.
Right now, my betta's in a 2 gallon planted jar. I'm at home, rather than in my dorm at college. His 5.5 gallon tank is there, which is what he's usually in with the heater. I'm going back to the dorm this Sunday to move everything back home for the end of the semester, so I won't have his bigger tank until then. I do have other heaters I can use, but none that can fit in his jar, otherwise I would have done something by now.
Do you think Petsmart would take the heater back and give me a new one? I might even have the receipt still, but I'm not sure. I was hoping they would just replace it with a new one.