I have a 20 gallon tank setup with a topfin heater. The tank was running fine for a month until one day i discovered all the fish were dead. After doing a little looking around, i noticed the water temp was over 90 degrees F. After some experimenting I discovered the thermostat in the tank had broke and the heater was not shutting off instead just kept heating past the 78 degrees it was set on. I brought the heater back to petsmart and they replaced it. However they wanted nothing to do with the tank full of dead fish. I have invested alot of money into those fish and i am going to miss them. I buy all my aqaurium products at Petsmart and this is the first time that i have been disappointed with them. Any advice?
Thanks
Thanks