About: http://webisa.webdatacommons.org/233405398

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	They use protein skimmers, meters and control devices for ORP, ozone, and other things specifically made to control the compounds.
http://www.w3.org/ns/prov#wasQuotedFrom	tropicalfishkeeping.com