Joseph TOLLEDOT told me there is a YouTube video on how to build a selfwatering container :
He rightly asked me to first turn the volume of the sound on my computer down.
Interested in the way you can build your own selfwatering container? Go to the URL above.
You can also “Visit http://www.survivela.com for more tips from an urban homestead“, and find more videos on container gardening announced in the right column of the YouTube page.