Detergent Module

I purchased the auto detergent module and installed it on my Ultra L40 Gen 2. I then updated the app to include the auto add detergent feature. Do I still need to add solution to the water, or is it sufficient to just add the solution directly to the module and fill the water tank with only water?

You just add your cleaner to the auto dispense add on and fill the clean water with plain water preferably Distilled water