The OASE optimax line of aquarium-water-pumps are designed for marine and freshwater tanks. The optimal 800 Includes the fittings in the box for easy installation and inline capability. With the pump's lightweight body you will have no trouble quickly placing your pump in its desired location using the suction cup feet. This pump includes a built-in adjustable flow control to adjust the water flow to your ideal setting. It is proven to use less energy and still have more output than other standard pumps. Designed using German engineering and manufactured in Italy, the optimal isn't like any other water pump you've used in the past. The optimal line of aquarium-water-pumps allows you to have optimal water circulation and displacement with ease..