About: http://webisa.webdatacommons.org/452813014

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	Chemical involves adjusting the water chemistry somehow, often with activated carbon and other substances that will remove toxins (ammonia, nitrite, nitrate, metals, etc).
http://www.w3.org/ns/prov#wasQuotedFrom	tropicalfishkeeping.com