natural swimming pool costs less then a regular pool plus no chemicals!! The plants and animals filter it. video how to
Een droom van een natuurlijke zwemvijver
Excellent article from HowStuffWorks about all things pool-related. (Note this link is to page 3 of the article.)
Nice size... see that person back there? Gives you perspective.
Spa Filters Save You Money
Building a Natural Swimming Pool | ... ? We can build you a natural swimming pool such as this anywhere
Swimming pool filtration doesnt have to involve chemicals, check out these natural swimming pools
How the natural swimming pool filtration system works. Chemical-free, maintenance-free (other than weeding I guess).
MINTY WARES | Cute graphic illustration of a pool scene from above. Jiro Bevis
next to a natural looking swimming pool filtered by the plants instead of chlorine