I don't have one so I really don't know much about them but I do know a little bit about chemistry. So, to me the
pH controller is the most stable option and should give you the mores consistent results. Plus I think I remember reading that if the
pH get too low the media turns to mush. But, what happens if the power goes out if you are using a
pH controller? Does the CO2 keep going or does it fail closed?
