Found an old article that you might find interesting.
http://www.practicalfishkeeping.co.uk/content.php?sid=5317&utm_source=PFK_newsletter&utm_medium=email&utm_campaign=October_26_2012&utm_term=Treasures_of_Pirate_Island&utm_content=html (http://www.practicalfishkeeping.co.uk/content.php?sid=5317&utm_source=PFK_newsletter&utm_medium=email&utm_campaign=October_26_2012&utm_term=Treasures_of_Pirate_Island&utm_content=html)