I have some pretty good ideas why it failed. I did not start spraying the first plant until it was already flowering( had planned to make it herm by messing with light cycle, that didn't work).
Then I could not get actual colloidal silver at the health food store, all they had was this other stuff, think it was "Ionic Silver", so used that until I could get a silver generator shipped. I am pretty sure that that the generator was fine, and the silver wires did have a certificate. I used to make a lot of colloidal silver when I was a kid, and we drank a ton of the stuff.
On a side note, I'm really not so convinced of the notion that colloidal silver is poison. We drank a ton of it growing up, and all six of us kids, and mom and pop, are all still hear. All still fairly healthy people. I am by no means an expert on the subject though, But don't really trust anything the FDA say's, either....