I've contacted customer service but have not heard back yet, so I am posting here. They requested a video which I have reuploaded. Bubbles are not being produced and it is overflowing with pump controller set at level 1 and water level dialed down to the max. Does not make a difference whether air intake tube is connected to C02 scrubber or not.
Btw that is just dust on the controller, not salt.
Btw that is just dust on the controller, not salt.