I feed astaxanthin (pronounced as-tuh-zan'-thin) from JEHM (http://tinyurl.com/3naqtt). Started with fry, now I mix it with a dry food I make similar to Reef Chili.
I believe NatuRose will be discontinued in the near future, if it has not already been discontinued.
You can find discussion of the NatuRose product and sources which still had stock (at least a few days ago) here: http://tinyurl.com/4ya8mb