This document is considered the “bible” for Natural pool building. All this knowledge used to be only available to a limited number of installers after extensive training and is considered as “Secrets of the Trade”. Now this e-book has been rewritten for Self Study purposes. It covers the general ground rules for design of a Natural Swimming Pool, Construction, Installation of underwater extraction, Filter zone, pumps and pipes and much more… Now this insider knowledge has now been made available for you to download and study, then either build pools for others or for yourself. And if you pass it on to your pool builder and tell him “This is what I want!” that’s fine too! With this full size version flipping e-book you can create bookmarks, zoom in, print either all pages, current pages, bookmarked pages or print pdf, or save the whole e-book as a pdf file. The file downloaded is a zip file, by unzipping the exe file is unpacked which contains the flipping e-book based on Adobe Flash Player technology. There is also a .pdf-file included in the zip-package.