About: http://webisa.webdatacommons.org/54013778

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	So I would recommend removing the rock, as you did, because with time it will cause the pH to rise, get some good lighting for your tank (which will be dependent on the types of plants and height of your tank), and a decent fertilizer.
http://www.w3.org/ns/prov#wasQuotedFrom	tropicalfishkeeping.com