My tabletop biosphere on KQED
April 16, 2008, 10:04 am by bottleman. Filed under: closed ecological systems.

One little note: the video segment is very pretty and smooth, but might give the impression that making one of these systems is pretty much throwing some stuff in a jar. It’s not. Yes, the pond scum is important, but too much of it will be a very bad thing. So: read the full recipe at this link.