Wow, what a great solution! My one question is, is there a way to tell when the sponge portion of the aqua-pod is dry? Once the soil is dry, the sponge releases its excess moisture, but is there a way the user will know that the sponge is now dry and it is time to water again? The scientific approach that you have used in evaluating the aqua-pods showed that this is not only a great idea, but is a viable solution to water scarcity. Great job, this was a lot of fun to learn about!