Homebrew PCBs

> 
> Resuming the top query results from google on Pentasodium Pentate:
> It's a metal chelating agent that 'inactivates' copper or metals in hard
> water "creating superior foaming and cleaning performance."
>


Yeah that sounds like the problem. The stuff you want is straight peroxide diluted with water. The 3% drugstore stuff for washing cuts and scratches works, but the beauty supply shop near me carries 40 volume stuff without additives.