I'm looking at the ap and when I say it's "telling me" it has exclamation marks and says I'm out of recommended ranges on FC and CYA. Then it says pH, TA, and CH are outside the ideal range. That's what I mean by it telling me what do do. For pH is says Recommended is 7.2 to 8.0 and Ideal is 7.6 to 7.8. Mine was 7.5 and there is an exclamation mark but maybe cuz the exclamation mark is blue it was ok and only when it's red I need to do something? Or should I ignore what the app tells me or put my own #s?The app is a tool. You must tell it what you want to do. It is not 'telling' you to add anything. You can change the Goal levels. You should not mess with pH until it gets to 8. Then lower to 7.6.