While sitting at home watching my tank today, the power flickered a few times. The flickering scares the crap out of my fish (I have to get one of my wrasses out of the overflow). When the power was flickering I was thinking about universal power supplies and how long one could keep the pump going on the tank.
Do any of you use a universal power supply on your tank? If so, what kind and how long does it keep the pump running when the power is off?