About: http://webisa.webdatacommons.org/68152010

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The air streams through granulated rock, which binds nutrients such as phosphate, and is then distributed in the pool through aeration hoses or injector jets.
http://www.w3.org/ns/prov#wasQuotedFrom	biotop-natural-pool.com