[Dirtdawg57]

So I bought a used aquatek co2 regulator and got it hooked up, but while trying to set it I noticed that the working pressure keeps surging causing the bubble count to fluctuate. It seems like the gauge will steadily fall, then it surges back up again. Does anyone know what would be the cause? Here is a video I took of it happening.

https://youtu.be/uKbiNw6EhkQ

Also is it possible to take apart and clean the silonoid that comes with these aquateks? Thanks!