I forgot to turn off my hydro 25watt heater in my 2.5gallon tank, and nothing really happened but now it makes a clicking noise and it doesn't hear as fast. Right now it's around 80 degrees. But before this happened it was set to the same temp and it was around 81 degrees. I'm not sure if it's broken because it seems to stay at 80 degrees atm. And what could that clicking noise be that's it's making? Please help asap!