Anyone using an old jebao dp-4 dosing pump?

[Jl330]

I bought one of these a long time ago for a tank that I ended up breaking down and selling off and never took it out of the box.

I’m figuring up my consumption on my new tank and wondered if it’s worth setting this up or if it’s inherently not good and should be replaced.

 

[Nano_Man]

Have you a picture of it . My doser might be the same