ur best start would be like me and just go on google type planted tanks and save some picture and then when u go back and look at them look at that picture and ask your self why u chose that picture what is in it you like?
also another good one is RATEMYFISHTANK>COM...save some and start your creation. that size tank in my opinion would be neat with tanganykin cichlids and rocks with java ferns, moss, and anubias. add some frontosas and leilupi, and some julis.
http://www.fmueller.com/home/aquaris...nts/java-fern/
this link is very nice idea of what you can create with that tank and its only 40 gallons less then what you have. good luck and let us know
