I've seen pictures on this site where people kept aquatic life in these tubs. I've also seen people make filters for their ponds out of these rubbermaid stock tanks. Pretty sure they are safe, it's made for large animals to drink water from. I paid around $260 for a 300 gallon rubbermaid stock tank that is a bit over 5 feet wide by 5 feet 9 inch long and only 2 feet high for doing water changes on the pond.


