PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Of these products (and there are more as well) I recommend Prime and Amquel Plus as these two leave the NH4 and nitrites in an ionized form that is still bio available for nitrifying bacteria which is especially important if the tank is not fully ???cycled??? for whatever reason.
http://www.w3.org/ns/prov#wasQuotedFrom
  • aquarium-pond-answers.com