PowerSupply: 3-6V DC
3v 18ml per minute
4.5v 33ml per minute.
6v 36ml per minute.
(Approx)
There are many ways to use a dosing pump for example: 2 part dosing calcium/alkalinity, balling method, kalkwasser dosing, freshwater top up, trace element dosing, planktons/coral food feeding etc.
Note: You will only be given a dosing pump and it would require some basic DIY and a 6vDC power supply to get it running.
Sample picture from of user that have turn their dosing pump into