This channel has pioneered DIY Organic Pools for those who would like to know more about Organic Pools or Natural Pools and how to make one themselves. David Pagan Butler is the inventor of the low energy, bubble powered Organic Pool and this channel shows examples of pools made around the world . He also shows how to care for them and how make various bubble powered devices for these pools. See organicpools.co.uk for a free PDF of his DIY Organic Pools Manual. You can also find the link to his full DIY film on Vimeo on demand "Make a Natural Swimming Pool".
David Pagan Butler has invented the "Olive" biofilter for Organic Pools.