{"Page URL":"https://www.appropedia.org/Natural_pools","Page description":"Natural pools or natural ponds are systems of constructed bodies of water, contained by isolating membranes, in which all purification of the water is carried out by the motion of the water through biological filters and plants growing hydroponically in the system.","Page image":"File:Natural pool Linosa.jpg","Page language":"en","Page license":"CC-BY-SA-3.0","Page title":"Natural pools","Page views":"59","Page year":"Thursday, 01-Jan-09 00:00:00 UTC","Modification date":"Thursday, 27-Nov-25 14:48:27 UTC"}