See more about this article : Tunze Skimmer Kit 15

For salt water up to 500 litres (132 USgal.) in a hard-coral tank.
Glass tank 1591.100 (300 x 320 x 460 mm / 11.8 x 12.5 x 18.1 in.)
Safety volume 21 litres (5.5 USgal.).
DOC Skimmer 9410 with post-filter.
Osmolator 3155 with infra-red technology and alert sound emitter.
Recirculation pump Silence 1073.020 (2,400 l/h (634 USgal./h), Hmax. 2 m (78.7 in.).
Storage container 5002.25.
Total energy consumption 42 W.