About: http://webisa.webdatacommons.org/114078165

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	For now, if money is a problem, the ammonia and nitrite tests are the first ones you need, then nitrates then GH and KH. Also, test your tap water and see what the levels are after it sets out for 24 hours.
http://www.w3.org/ns/prov#wasQuotedFrom	tropicalfishkeeping.com