sera guide - Marine aquariums

28 The downstream UV-C device, such as the one in the sera marin Biotop Cube 130, en- sures permanently healthy aquarium water. • Pathogens in the water, that may adversely affect the animals, are reduced. In particu- lar, the number of free swimming stages of white spot disease pathogens can be low- ered with UV-C radiation. The pathogens become damaged, and rapid multiplication of these pathogens is prevented. • All kinds of floating algae are reliably re- moved without using chemicals. Aquarium inhabitants and filter organisms are not harmed by using UV-C water clarifiers. UV-C clarifiers should run 24 hours per day as to be effective. They will then maintain permanently biologically healthy water. The unit is switched off only when performing maintenance in the water. The sera UV-C System 5 W for up to 500 liters (132 US gal.) of aquarium water is the ideal addition for filters without a built-in UV-C water clarifier. A powerful but at the same time very economical UV-C clarifier with mul- ti-purpose connection for filters and pumps. The sera UV-C System 5 W can be used in combination with a flow pump such as the sera P 1200. The performance of the pump should be the volume of the aquarium per hour. The UV-C clarifier cannot be operated without a pump. 3.4.4 Pathogen reduction by UV clarification sera UV-C System 5 W for adding to filters without UV