they had the coolist thing there . two big containers with color water in them and they were bubbling . they had a pan under them and it was so cool bubbles wer coming out the top of the containers. They used a fish tank pump and clear plastic tubing . I am going to try to do more than one container with the colored water . I will let you all know how it goes so Cool and real looking . They also went to the dump for electronic parts and had them on shelves . Just had to share
God bless
Doreen
The water was colored with food coloring and lots of water