The Eheim compactON Aquarium Pumps are the successors to the extremely popular Compact and Compact+ series pumps, and are highly versatile, powerful, and efficient pumps boasting slick, compact designs. These pumps are fastened with robust suction cups, safely securing them to most surfaces they are placed on. Thanks to their high quality make, the versatile Eheim compactON Aquarium Pumps run quiet and function equally well in both fresh and marine waters, making it the ideal choice for beginner or advanced hobbyists. Eheim compactON pumps include an accessory bag, with additions such as a suction basket and threaded coupling for even greater functionality. The Eheim compactON 2100 features an adjustable flow rate of 370 GPH and a max head height of 7.87 feet with excellent performance for its low power consumption. The 2100 can also be modified for use outside of water, and utilizes a ceramic bearing for silent operation.