Comment by steve_adams_86

I missed this, but this is great information! Thank you.

I've learned this in an aquaria context where killing the bacterial coating in a tank is a bit of a disaster, and fish tend to be quite sensitive so it could be very risky to use potassium metabisulfite. But what you're detailing here is really interesting. I've used it in brewing before, but it was part of a kit and I didn't really understand it beyond basic mechanics. It's a lot more interesting than I realized!