Small Scale Spirulina Production Plans
One of the world's longest-running Spirulina operations is in Auroville, India (informative page with details). There is another Indian example of small-scale culture in Madurai (Youtube video here). Some successful village-scale projects have been done in West Africa.
Spirulina grows in long spiral chains that can be easily harvested in a cloth. Small-scale cultivation is feasible, as shown by JP Jourdan in France (see the pages at Antenna Technologies, including a training module for details). A drawback with small-scale cultivation is that it is relatively more labor-intensive and often has a lower yield than large-scale operations.
There is a patent about growing your own Spirulina at home in a photobioreactor.
Other links:
Intergovernmental Institution for the use of Micro-algae Spirulina against Malnutrition (IIMSAM) [1], which includes an overview of different production systems [2]
From http://www.spirulinasource.com/earthfoodch9a.html - to French website - http://www.spirulinasource.com/cultivez.html