I got mine (same regulator) down to a pretty steady 12-15BPM, this left me with an approximate ph of 7.0. (Sorry Brian, I wimped and got a $5 Hagen wide range ph test. I'll get the probe someday soon.)
That needle valve is real touchy, though. A nudge can really change the flow. The lock-nut helps.
That needle valve is real touchy, though. A nudge can really change the flow. The lock-nut helps.