Homebrew PCBs

> 10 gallon fermenting carboy. I'm no chemist, and except for the 
issues 
> with copper as mentioned by other posters, I don't think a few ounces 
> of FeCl3 now and then compare with the rest of the daily crap we 
> polute our septic systems with.  

Sewage treatment plants use ferric chloride in the process before the 
water is dumped back into a river or ocean.