Generally any farm store, grange or farmers Co-Op will cary the RubberMaid tubs. Some may also have or can order larger plastic tubs called "stock tanks" by farmers. The 300 gallon RubberMaid tub measures about 60" by 66" by 24" deep and were priced in the $250 range in the past.arihakan;2096286; said:where can u purchase one of those rubbermaid tubs? that he kept the stingrays in