Minimum Day Scenario - Voilent Water Age Results

Hi,

I am observing sudden water age increases and drops in my model. I have only 2 pump stations in total and they are pumping water intermittently so I do understand when the flows are sudden and erratic but shouldn't water age just continue increasing up until a point instead of being so unstable as shown in the graph below? Should I try tweaking pumps to continuously pump throughout the day?

Thanks.