Energy-efficient Maxi-Jet?? Pumps are very durable. With a sealed casing and superior internal design, it ensures that they won't overheat when ran dry, unlike most other pumps. They feature 3-suction cup mounting to ensure that the pump is stable in your reservoir. Equipped with dual pre-filters and a simplistic design, making the Maxi-Jet?? pumps virtually maintenance free and long lasting.