Pardon my ignorance but I'm starting to be confused in using drop checkers. Some clarification:

- if it takes 2-3 hours to equilibrium, does it mean drop checkers doesn't really display 'real-time' c02 levels. say at a given time, the indicator displays green, then it is the c02 level 2 hours ago?

- how frequent should one change the the 4 dKH solution and reagent?

Thanks!