calcium reactor regulator question

[mario4254]

there are two gauges on a regulator one tells you how much c02 is left in the tank. what is the other one for?, my is reading at 36 psi ...its that what is should be at? i got the reactor used from a fellow reefer and just set it up. thanks mario

[jtma508]

The other gauge is the second stage pressure or the pressure that is going into your reactor. Check your reactor manual but most of which I'm aware suggest a pressure of ~15psi at the second stage.

[AZDesertRat]

Most suggest under 10-20 psi for the secondary pressure. I kep mine closer to the 20 and the bubble count seems to stay more steady.