Im not gonna flame here but people have tested this product as useless and pure hocus pocus. Do I have data from the test. no. I think Tom barr gave it a go and pretty much proved its nonsense. Not positive it was him though, but I do know that he knows his stuff and he doesnt think it does a damn thing, and thats good enough for me. If you can tell me how it works then Ill listen, until then, you may be better off sacrificing live chickens to the aquatic plant gods then waste money on this. :tinfoil3: