I am starting on working out the planting and water systems for a house lot and would like to describe what I am doing for others to point out if I am doing anything stupid The house will be at the back of a 30 meter deep, 166 meter wide lot that is maybe 10 or 12 feet lower at the front edge than the back. Close to the house on one side I plan to have a 20 foot diameter tilapia pond that gets all the rainwater from the roof after it waters the planter boxes around a large roof garden (with overhead trellis for vine plants to create shade). The overflow from this tilapia pond goes to a much larger tilapia pond that also has water veggies. On the other side of the house is a 30 foot x 10 feet pond planted with rushes and reeds for about half its length and I guess partitioned with overflow pipes between sections. Grey water from the house goes to here for the reeds and rushes to filter the water then the other half has water chestnuts, taro, kangkong, etc. What I plan then is two banana, coconut, papaya circles with raised compost in the center and a small pool underneath to collect the "tea". The overflow from the large tilapia pool flows into one and the overflow from the grey water pool flows into the other. Then the overflow from the compost pools feeds a simple swale system going to three or four banana, coconut, papaya mandalas with pools in the center of each. Doe this make sense or am I dreaming?