About: http://webisa.webdatacommons.org/344808174

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	After that, your Ammonia and Nitrites will read 0 and your safe to add fish and other critters when your Nitrates get under 40.
http://www.w3.org/ns/prov#wasQuotedFrom	tropicalfishkeeping.com