I have never tried this, but being a Canadian product, it might be easier to obtain... NorthFin
http://www.canadian-aquatic-feed.com/?page_id=15
http://www.canadian-aquatic-feed.com/?page_id=15
See the "rumor" I heard is that the owner of nls and the owner of xtreme used to be partners in business in ontario i believe. And when they came up with NLS the one partner split off and took the recipy and called it Xtreme. I was told this by a friend of mine who owns an exotic fish and reptile store. I'm not saying you're wrong Im just letting you know what I was told.Xtreme is not the same thing as NLS, not even remotely close. The only thing similar those two foods have is the owner of Xtreme lives just down the road from the owner of NLS. That's where their similarity begins & ends. Northfin food is far more similar ingredient wise to NLS, than any other brand.