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PH controller vs. Drop Checker

11K views 31 replies 13 participants last post by  Supercoley1 
I use both....redundancy redundancy redundancy.

Originally, I used only the drop checker, but when I acquired the pH contoller, the drop checker was useful in determining what pH to set my controller at.At it's heart, a pH controller uses the same concepts behind the pH vs KH table, which we've all read can be slightly inaccurate. That's why it was nice to have had my drop checker setup and working at the co2 level I wanted, pop in the pH probe, let it adjust, and then tell the pH controller to keep it at that pH.

Now, with both working, I can get an idea if it's time to recalibrate either of them.
 
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