About: http://webisa.webdatacommons.org/434232169

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	Low phosphate levels is a known cause for GSA. Get nutrient levels back up and manually scrub it off the glass and other hard surfaces.
http://www.w3.org/ns/prov#wasQuotedFrom	plantedtank.net