pd486

One of the problems I have to figure out is how I will filter the water. I know that I want to mimic groundwater filtration. After reading and researching I think I have found a way of using an unglazed terra cotta pot, sand, gravel, and perhaps some activated carbon. I think its important to have a filtration system because in heavily populated cities rain water can have many bad chemicals and such we don't want to water our plants with. I think I will be able to work on a passive gravity fed filter to keep water clean.