Natural swimming pools are the biggest news for gardeners since green
roofs. The water is cleaned by aquatic plants instead of chlorine so it
is gentle on the eyes and healthy for swimmers. These self-cleaning
ecosystems are beautiful to look at and provide a valuable water source
for dragonflies, honeybees and other beneficial insects. Wolfram Kircher
has researched extensively into the low-nutrientdependent plants that
are needed for the surrounds of natural swimming pools and the
high-nutrient dependent plants that are required for the regeneration
zone. In the book he demonstrates how to maintain the nutrient level in
perfect balance to keep down the algae down and water sparkling. The
authors have installed pools for decades and trialled different systems
and plants to come up with the best possible designs.