is that what you are talking about?
That's the stuff, Prazi-pro itself was hard to come by when I needed it. I ended up buying 10 grams of powdered praziquantel from one of the links on Koivet. 10 grams cost me somewhere in the $40 range after shipping, and is enough to treat 1000 gallons of water. I'll never need to buy prazi again probably, but it's nice to see it in affordable packaging nonetheless.
Dave