Carbon Dioxide for pH adjustment

[Bob Jakob]

Can carbon dioxide pH adjustment cause increase scaling of a salt cell versus the use of muriatic acid?

 

[duraleigh]

I don't understand why you wouldn't use muriatic. If it ain't broke, stop fixing it!

 

[mknauss]

CO2 will lower pH but can raise TA. To reduce/eliminate scaling in a SWCG you need to have lower pH and TA if your CH is above 300 ppm.

So yes. CO2, if used, can increase scaling in your SWCG.

 

[ashtonfitzgerald]

CO2 injection will only temporarily reduce PH when in solution. Once the gas injection stops, PH will rise again as the dissolved co2 gases off--at least this is what happens in an aquarium ecosystem. We can approximately measure dissolved co2 in the water column by measuring ph drop from gas-off to gas-on.