We sell a 2.5 gal refill for $3.69.
DANG!!!!, Evan! I wish you could ship that to me!!! I paid $17 for 5 gallons--that's about what you pay up here. So it might WELL have been the 14% I measured.

Vedddddy Interesting!

I realized if you add 1 ml to 10 liters (as in refilling a 2 liter Coke bottle 5 times) you'll get the same results, too. Just keep it all metric--and it will be easier.

BTW, I recently discovered that they sell spigots for the carboys. What a difference they make! Worth every nickel!