I plan on growing Auto Pounder from Auto Seeds this season, but I'm not entirely sure on how much water to use during vegetation and flowering. The holes my Ocean Forest will be in are slight larger than 1 cubic foot. The plants will be getting full sunlight and will probably grow 2-5 ft. How much water should I start out with if I was going to water twice a week? 1/2 a gallon? gallon? Also I the natural soil here has red clay in it considering it's Alabama so that may be a factor.