I have a bag that was for 50 gallons only used enough out for maybe 5. I just didnt particullary like RC so im using coralife now. If anyone would like this I live very close to Sea Dwellers on Dupont we can meet near there to pick it up. I dont really want any $$ for it but if you have a frag or two of a really bright colorful coral that will do ok in a lil aquapod that would be cool.