I updated my grey water system at the weekend to improve the filtration I had built. If you are interested you can go to the design page.
I also added more vertical growing space by building another fence. I am doing a lot of research on roof and wall gardens at present. You might like to see my Fig tree up a wall project. I am adding more wall growing areas as quickly as I can build the support structures on the house/fences etc to allow vertical growth.
Nice design.