About: http://webisa.webdatacommons.org/113160267

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	Those of us with natural or low-tech systems rely on nature to do most of the work, including providing CO2, oxygen, hydrogen [these three occur naturally in an aquarium] and other mineral nutrients.
http://www.w3.org/ns/prov#wasQuotedFrom	tropicalfishkeeping.com