I know I would be scrutinized for this one, but for a normal 2 hour power outage, I do nothing. Unless I happen to be at home and my rooter goes down. Then I will start up the generator and put the tank on power backup. But I do it more to get back on the internet....
The longest my systems been offline was 6 hours. TS1 skimmer pump that leaked power and tripped the house just after midnight. When I got up, the house did sound very silent. Fearing the worst, I got the power back up after eventually removing the quarantine system with faulty skimmer from the power supply. Fearing the worst I waited for the lights to come on. All my fish were happy. No noticeable effects on the DSB either. Everything seems as if nothing happen. Temperature did drop a bit, but did not really check the low point. Skimmers did not overreact.
Then again, I might have been lucky.
OK, this did happen in Summer. Winter most likely would result in bigger temperature drops. My house is isolated. And my fishroom as well, being part of my garage. There is isolation in the roof.
I do not advocate to do nothing. Every tank is different. If you overstock, then you will not be able to run a tank without any power as another similar size system.
Nano tanks, like TL450 and TL550, can also not run long without power. The canopy area is just too small to allow for the tank to breath. Open top systems and gas exchange can happen easier. Even if there is no draft.
The longest my systems been offline was 6 hours. TS1 skimmer pump that leaked power and tripped the house just after midnight. When I got up, the house did sound very silent. Fearing the worst, I got the power back up after eventually removing the quarantine system with faulty skimmer from the power supply. Fearing the worst I waited for the lights to come on. All my fish were happy. No noticeable effects on the DSB either. Everything seems as if nothing happen. Temperature did drop a bit, but did not really check the low point. Skimmers did not overreact.
Then again, I might have been lucky.
OK, this did happen in Summer. Winter most likely would result in bigger temperature drops. My house is isolated. And my fishroom as well, being part of my garage. There is isolation in the roof.
I do not advocate to do nothing. Every tank is different. If you overstock, then you will not be able to run a tank without any power as another similar size system.
Nano tanks, like TL450 and TL550, can also not run long without power. The canopy area is just too small to allow for the tank to breath. Open top systems and gas exchange can happen easier. Even if there is no draft.