no 1 hour aint long . if depend on your feeding . my timer is set on every 3 hours. so there for my plant dont need water until every 3 hour so it can last that long . u will know or see when your plant is gone to long with out water. hope this help
smokeOnE702 Reviewed by smokeOnE702 on . Water Exchange When doing water exchange how do you keep the plants happy? Should some excess water be left in the AeroFLo 36 growing chambers? How long can plants go without any water on their roots? What is the best method for keeping plants happy during water exchange? Rating: 5