I had recently seen other mentions of the Dervaes family, and had checked out their web site and several videos on YouTube.
What they are able to do on such a small piece of land is very impressive.
The one thing that concerns me about their quest for self-sufficiency, is their admitted reliance on the municipal water supply. With only about 21" of annual rainfall in Pasadena, I assume that there is no way they could ever collect enough water to keep their operation viable (in the event of a longterm city water interruption).
I'm not knocking them... they are certainly way ahead of me when it comes to self-reliance and self-sufficient living; but, access to a water source (other than the city pipes) seems like a major flaw in their overall plan.