What's your reg pressure? 15psi enough?
I found a really beautiful two-stage regulator for less than $40. But the catalogue says it has a max output of only 15 PSI. (although the gauge goes up to 30)
From your guys' and gals' experience, is 15 psi enough?
Note: I use one of those standard glass diffusers with the ceramic disk inside the tank, but maybe in the future an inline. (eheim 2234)