@abitofeverything11010: The slimy, thick "sludge" in a soda fountain drain line is a biofilm—a colony of bacteria, mold, and yeast. It thrives because the lines offer the perfect environment for these microbes to grow: constant moisture, an ideal temperature, and a steady supply of sugar. There are ways to prevent this by putting "soda snake" down the drain lines to help prevent the growth of the bacteria and yeast but it is not foolproof and every soda fountain drain line has this sludge in it. #soda #nasty #satisfying #fyp #ypfッ