S.T. International Dosing Pump for Aquariums Provides accurate dosing for diluted medicine or aquarium water supplements Great for regularly dispensing liquid fertilizers to aquatic plants and dosing trace elements Designed for long term use and boasting a metallic shine finish, it operates quietly and does not produce heat Contains a smart micro-computer chip for an intelligent programmable dosing schedule, which can be set from 24 times/1 day to 1 time/9 days Equipped with universal voltage for worldwide use and has been awarded CE certification and International Patent approval to ensure safety