About: http://webisa.webdatacommons.org/340021826

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	However, there is a point where the filtration you would require on a tank and the number of water changes you would need to do in order to keep nitrate levels low would become simply unwieldy.
http://www.w3.org/ns/prov#wasQuotedFrom	tropicalfishkeeping.com