Holy Crap!!!
I decided to take a quick search for potassium permanganate.
I bought some from a lab supply house a few years back. Pretty sure it was over 10 bucks per oz (pure).
Found this stuff online. Looks to be the same as what is in the video.
http://www.water-softeners-filters....ng-2-lbs.php?gclid=CIOaoabAnb0CFRQV7Aod-TYA1g
2 POUNDS for 18 bucks (on sale) and only 7 bucks shipping.
With this much stuff, it would be easy to play "Mr. Science" for your kids and friends and still have plenty left over!!
Dave
Nice I will have to check it out. Good points on the finding antifreeze easier than glycerin...