Red, thanks for the drawing I really appreciate it.
Quarter, Millet can grow in the water but it needs to get established so I think 3-4 weeks without being in water would be best, was also going to plant corn and that would need 60 days minimum. I do have a trash pump if I need to drain it down but was hoping to find a solution that would allow me to maintain a lower level then let it fill back up in the fall