Saw this interesting article.
http://www.practicalfishkeeping.co.uk/content.php?sid=6117&utm_source=PFK_newsletter&utm_medium=email&utm_campaign=December_6_2013&utm_term=Review:_Tantora_Guava_Leaves_from_Hobby_Shrimp&utm_content=html (http://www.practicalfishkeeping.co.uk/content.php?sid=6117&utm_source=PFK_newsletter&utm_medium=email&utm_campaign=December_6_2013&utm_term=Review:_Tantora_Guava_Leaves_from_Hobby_Shrimp&utm_content=html)