You all need to be real careful using used chemical drums. Some pretty nasty chemicals are sold in them and it is almost impossible to remove all residue without a very professional cleaning setup. You don't want to try this youself unless you are absolutely certain what was in the drum. Some chemicals react very badly with water! I was in the business and witnessed enough "accidents" and mixups to cause me to want to caution you all to be more careful about this then you might be inclined to be.
