The bleach post was pretty interesting so I thought I would pose about Acid. Living in Houston Texas I stopped by Napco and they were fantastic. They will sell you a 5 gallon can for bulk bleach for $14, but Amazon has a better product and you can get a cap with a valve. Search "Reliance Products Aqua-Tainer 7 Gallon Rigid Water Container" and buy the $3.67 cap so handling is easier and safer.
I asked about Muriatic Acid and they let me know they only had dillute HCL (15%). Where are cheap places to get bulk Acid?