Harry Muscle wrote:
Does anyone out there have a setup where they use compressed CO2 instead of
DIY stuff but still inject it without any sort of automated PH sensor to
control everything? I like the idea of adding the CO2 to my tank but I

I use this method. I use a needle valve to control CO2 flow to an Eheim
diffusor in my 29 gallon tank. With a KH of 5 degrees, I get a pH swing
of perhaps .2 daily, and I've never had any problems with running the
CO2 24 hours a day.

HTH