About: http://webisa.webdatacommons.org/315325045

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	Best test kit for this is the API Master Test Kit, it is a liquid test which are more accurate than using strips.
http://www.w3.org/ns/prov#wasQuotedFrom	tropicalfishkeeping.com