Hi Aciam;

Waterbear has described the percarbonate method above, but your situation is somewhat unique. I've never used that method, and am a bit skeptical. (Waterbear, you say percarbonate releases peroxide. But if so, how does that help? Baquacil Shok is very strong peroxide.)

Chem_Geek is confident that percarbonate will work FASTER in a regular conversion of PHMB, but your PHMB is already gone; what's left is 'Baqua-poop' or degraded Baquacil. Chem_Geek is NOT sure that percarbonate will work better (or even at all) against Baqua-poop.

Do I know whether copper or copper + silver or copper + silver + monopersulfate will work? No, not at all. I'm pretty sure that chlorine will work eventually, but I can't give you any time frame. There have been references to similar situations, but I haven't been able to find them, and to such conversions taking 6 weeks, but I don't know!

But, I completely agree with Waterbear on swimming: this is NOT like swimming in a dirty lake. Ordinary chloramines can be very irritating to skin and the genitals. I don't know what is in your pool, but as you already noted, it hurt your hand.

Sorry I have so little info. I spent 3 hours on research this afternoon, and only found out how much is NOT known.

Ben