Wouldn't it be a problem for the stability of pH of water by turning on and off the CO2?
That's why you calculate and observe your PH swing. PH swing means the difference betwen your ph before injecting CO2 and at the end of the day when you turn it off, at least from my knowledge correct me if I'm wrong. My ph never drops more than 1.0, but if you add some baking soda, the ph stabilizes and moves less often.
For example without baking soda input after each WC (Note: This is just me, every person's situation is different, you don't have to add a little baking soda like I do) My ph would be like 7.2. With CO2 it would then get to be about 6.2-6.5. With baking soda, the swing is smaller from my experience, only changing to about 0.5. So 7.2 becomes 6.6-6.8.
Well, what I heard form multiple people on this forum is that the drop checker is suppose to tell you how your CO2 levels are an hour behind the change. For example:
For the sake of this example, you raise your CO2 PPM to 30 PPM. A newly added drop checker, which starts out blue, will remain blue but gradually change over the course of 1~ hour.
I'm guessing its because it takes awhile for the reagent to react with the change.
I find the drop checker a bit questionable when it doesn't ever change. Makes me question its accuracy and whether its worn out or what.
I'm going to change the drop checker fluid today and see whats up.