So tried Everything?! So you did converted to Chlorine and back again at some point and never told us you sly dog! BTW... I see you changed your avatar.. that's kewl.. Your secret location is safe with me.lol....yeah, you're right....but the 'things to try' list has now reached the last possible attempt. Seriously. There's nothing else out there short of some completely alternate (non-chemical) approach.