RupertofOZ wrote:
Humm... "wiki" article suggests that it might in fact extract phosphorus from the water...
http://en.wikipedia.org/wiki/ChitosanThe rest of the google hits were all about it's "suggested" weight loss benefits as a "fat attractor"....

Are you suggesting it will decrease nutrient levels and help my fish lose weight?

I read that in the wiki article also, although I didn't see it anywhere else. I may have to look for an alternative, the problem is they organic stuff over here is a little short on details, the labels just say a product is 'good' or 'very good'.