New Defender's Study Bible Notes
2:6 six waterpots. These six waterpots (normally used for washing feet, etc.) would contain when full about 150 gallons. This much additional intoxicating wine would certainly be too much for guests who were already drunk, and it is inconceivable that Jesus would provide such.
2:6 firkins. A “firkin” was a “fourth” of a barrel of water, or about nine English gallons.