When I posted on how to build a natural swimming pool, many people argued that it looked unsafe, unhygenic and a haven for black flies and mosquitoes.
But Geoff Lawton—whose videos on how nature makes soil in aquatic systems, how to build a rocket stove water heater, and the 40 tons of life we find in one acre of soil have proven incredibly popular—argues that instead of filling our pools with toxic chemicals, we should encourage a natural balance of biology that includes algae, phyto-plankton and even edible fish—growing food and keeping our pools healthy at the same time.
"It's almost too easy," says Geoff. That may be an exaggeration. But the more we can learn to work with nature, rather than against it, the better off we'll be.
For those who want to see more, this video is part of EcoFilms Australia's upcoming Urban Permaculture DVD.