Penn Plax Air Pod Aquarium Pump for Power Outage Automatic Turn On Keeps Fish Safe Up to 55 Gallons, Model:APB1

ELECTRIC STANDARD - Switch to battery backup in case of failure: this amazing air pump runs on standard electric current. When it detects a power failure, the aquarium air pump switches to battery power to help keep your tank oxygenated. Requires 4 x D batteries (not included) to operate without electricity. ULTRA QUIET & ULTRA VERSATILE The pump features an adjustable flow control dial with two air outlets to customize your airflow to your needs. A convenient power indicator helps identify the power source used. Nearly a week of emergency backup power: the aquarium air pump can be safely used in tanks up to 55 gallons and can provide energy for 150 hours. Larger tanks require more than one unit. The air pump uses 110V electric current. Note: A check valve is recommended but not included in the kit. The pump is safe for both freshwater and marine environments. KEEP YOUR FISH ALIVE IN ANY SITUATION - Works on your home's normal power supply; the pump will only switch to battery power (DC) if it detects a power outage, ensuring continuous aeration of the tank. Fish need a constant supply of oxygen for survival.