You are absolutely correct about that the water aspect is not vertical related in any way. I'm just used to seeing vertical and aeroponics going so hand-in-hand

You are absolutely correct about that the water aspect is not vertical related in any way. I'm just used to seeing vertical and aeroponics going so hand-in-hand that I totally forgot about the possibility to have horizontal aeroponic greenhouses. I'm very curious as well about all of these water reducing efforts, since that may well be the largest thing that threatens the food supply in the coming decades.