Nyos Viper 5.0 pump The NYOS® VIPER 5.0 is a regulable feed pump with 1000-5000 l/h. The NYOS® VIPER pumps are the ideal feed pumps for your aquarium. They have been adapted especially for the hard conditions in seawater aquariums. Particularly robust components such as durable high performance ceramics made from zirconium dioxide are used. This means that the pumps...