A friend of mine raved about it, so I bought one, am waiting for it to arrive but am wondering if it’s worth the money (they were quite expensive).

I looked into it and found some good reviews in aquarium magazines and studies done in Japan and India with eco bio blocks being used in sewer systems and water treatment plants so it seemed legit. Anyone have any experience with them?

http://www.onedersave.com/products.htm

LUAM