The risk of power outage should be a concern for aquarium owners. Not only does your aquarium completely rely on power, a power outage carries with it the risk of power spikes or surges, which is something that could be hazardous for your fish.

Something to consider for a backup is a battery-operated air pump for each tank you own. With a good supply of batteries available, you should be all right for short periods of power outage. This battery-operated unit will be able to carry on the functions usually supplied by power-operated equipment.

An uninterruptible power supply (UPS) is another option for short-term power outages. These are available for purchase at most office supply or computer stores. A UPS supplies the necessary power through a battery supply. However, the battery remains continually charged, as it is plugged into the wall outlet and provides power the instant current stops flowing through the outlet. The power to your aquarium will not even flicker when your tanks are connected to power using UPS units.

For long-term power outages or frequent power outages, consider a gasoline-powered generator. Although expensive, a large item to store, and rather loud, generators will keep your fish tanks as well as other household equipment running problem-free during extended or frequent outages.

During a power outage, unplug electrical equipment to avoid power surges that may occur as your power supply is restored. A surge protector strip will protect your tanks from power surges. If you do have a power outage, take this opportunity to clean your filters, and, ideally, your filter media. Also, remember your fish can go 5-7 days without food, so don't feed them during the power outage unless absolutely necessary. Feeding your fish causes ammonia and nitrites to build up faster in the water, and without a filter, your Nitrogen Cycle is interrupted.