The Beckett 290 GPH 23 Watt Low Water Shut-off Fountain Pump is designed for most indoor and outdoor fountains, fish tanks, hydroponics, aquaponics, ponds, statuary, and aquariums. It has a built-in sensor that detects low water levels and automatically shuts off the pump, preserving the life of the pump. Fountain pumps can burn out when water levels are extremely low. This low water shut-off fountain pump automatically shuts off when it detects a low water level, which prevents the pump from burnout which can permanently damage your pump. It automatically restarts when it senses the proper water level. The adjustable valve allows you to adjust the water flow. This fountain reaches a maximum lift of 6.5 feet with a maximum of 290 gallons per hour. This pump is ideal for 3 ft. to 5 ft. fountains. It efficiently pumps 280 GPH at the height of 1 ft and conveniently connects to 1/2 in. ID tubing. This pump is equipped with a 16 ft. cord.