Here is a screenshot of my pH. I have the typical daily swings that are a result of the lights turning on/off. I have also noticed that over a ten day period, there seems to be a larger cycle. If you look at the daily peaks in the graph, you can see that they go from 8.07 to 8.28 and then start to go back down. This larger cycle is constantly repeating. Does anyone have a theory on what might cause this to happen?
P.S. I do have my sump light on an opposite schedule from my DT lights to reduce the pH swings.
P.S. I do have my sump light on an opposite schedule from my DT lights to reduce the pH swings.