Sounds good, I’ll try that….we don’t lose power to often. Thank youIf it is just to cover 2 hours, main fear is lack of aeration. Can either go for DC battery backup for circulation pumps such as for ecotech or get one of those automated air pumps that automatically detects outage and aerates the tank. In 2 hrs, the tank is unlikely to change temp to a degree that would harm the livestock.