KCL is really only dangerous intravenously, it is lethal in larger doses, as is anything. Its pretty much like table salt, although slightly more toxic, which is also not good for you in large amounts either.
I don't shake anymore. I found that pouring through a funnel did enough as far as I could tell.
I've suspected this as well. Though those out there with DO testers have shown that shaking for 2 minutes versus 1 minute doubles oxygen ppm. And unless I have a really hoppy beer, going through the funnel only lasts 30 seconds to a minute.
Even if these tabs did work, why pay money for something you can do for free thats not even hard or very time consuming?
I don't particularly enjoy doing the carboy shuffle. If its possible to attain double oxygen ppm with zero effort (or additional equipment), why not? At this point I'm just curious if its possible
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