Neptune DOS noise

[SeeFu]

Does anyone have a video of their Dos when its dosing into their tank? All of the videos online seem to be of the DOS doing a water change which I'm hoping is making a louder noise than when its just dosing into the tank. Trying to decide if I want the DOS or the BRS 1.1ml doser

 

[GabeM]

What are you looking to dose?

 

[SeeFu]

2 part, amino acids,

 

[SeeFu]

are there any other pumps out there that I can mount onto a wall? ONly pumps i can see are BRS, Ecotech Versa, Neptune Dos.