Just a quick update.
I notice if I leave the control center off all night and turn it on while the pump is already already running, then the cells will start bubbling as soon as I turn it on. It'll stop after 2min of bubbling and the status light will start blinking again. I turn off control center again, and it bubbles again for 30 seconds and then starts blinking again. Repeat it again, and now it only bubbles for 5 seconds and starts blinking again. Any thoughts why this is happening?