So I've bragged about my pH being pretty great for a year now but as of recently I've had several instances where the pH is rising beyond the tolerances. It's predominantly happening on weekends and or when people aren't in the office during its lighting period. This seems like the initial explanation beings I've verified my kalk is turned off at 8.35 however... that feels like a considerable jump, no? Anything I should be checking in addition? Or is this much to do about nothing?