So my tank is pretty new, but since it cycled the PH has been pretty steady between 8.10 & 8.20 and the ORP was steady around 390 to 410 for the past month. I did a 20% water change a few days ago and noticed the ORP steadily rose up to 470 over the next 8-12 hours and has hovered around there since. Today the PH rose up to 8.3 which I realize is still within an acceptable range, but it's just higher than I've seen it go before.
Just wondering what would cause the ORP to rise and if that is connected to the PH rising? I could find reasons for the ORP lowering, but not rising. Is it just the unstableness of a new tank or something else?
Just wondering what would cause the ORP to rise and if that is connected to the PH rising? I could find reasons for the ORP lowering, but not rising. Is it just the unstableness of a new tank or something else?