I think the important parameters in any automated watering design is the ability to rapidly fill the pots, so there is sufficient flooding and flushing action. The other alternative would be to water at a slower pace, but to do so very frequently - 1 or 2x per day - to simulate a steady flow through the pot to take away wastes and prevent the buildup of residues. If your RH is high enough that the medium at the tops of the pots don't dry out, residue buildup is drastically slowed.
I'm lucky - doing my growing in a greenhouse, if I need to rely on automation (I did that a LOT more when I traveled frequently on business), I can employ an overhead deluge system that absolutely floods every plant in the greenhouse. As long as I do so early in the morning (4 am, usually), they had plenty of time to dry off during the day.