Is your CO2 on all night?

Relief

I'm so relieved to hear the responses to this thread. I've been worried about the PH swings in both of my tanks, mostly overnight, but also from the time I put up a new bottle of DIY CO2 and the time the injection starts to peter out. It's like a gradual increase in PH as the CO2 injection lessens, but I've never notice any ill affects in the fish and the plants are doing great.
Thanks for all the feedback.
Len
 
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