I think that is the key for me..... try to get a slow consistent ferment. So far even with the turbos I have had pretty long ferment times by controlling the ferment temps. I have always had good tasting runs or rather no taste....lol. That is running reflux with raschig rings though. I agree that the filter can't hurt but so far haven't needed it luckily.

"Taylorboy,

Glad to hear things cleaned up for you. Did you see any little black flakes in your hooch ... or did any of the copper turn black?"

Ok ... there's some evidence of copper sulphate. So it's a good bet that you'll be able to avoid the smell altogether with a copper plug or two in your vapor path. The best part is: if you forget ... just break out the magic tea pitcher! :)