Quote Originally Posted by surfacefeeder
I measured my ph this morning it went up from 7.0 to 7.4 so that tells me if I want to run a compressor for a longer period of time my results can only improve.
Chris,

Just keep in mind that you will outgas more CO2 faster at lower pH and the effect is dramatic. About a doubling of the rate when operating at a 0.3 lower pH (see CO2 Chart and CO2 Graph.

So you'll want to follow Ben's procedure and continually add acid to keep your pH down. You'll find your alkalinity dropping at a good clip. I know you were probably just testing the system, but my point is that you would rise from 7.0 to 7.1 faster than from 7.3 to 7.4, etc. so you can really only determine the efficiency of your nozzle designs at a given pH.

Anyway, it sounds like you've found a great design!

Richard