Peggy, My holding tank is 14 years old and the odor caused by poor venting has permiated the tank as well as the hoses. I replaced the hoses and the odor there is still remaining odor and it is coming from the tank. I called the local Hunter dealer and the parts manager said that the tank used in the Hunter 34 was no longer manufactured. Does your company sell holding tanks? I need one no larger than 25 inches long, 22 inches wide and 14 inches deep. The connections are on the 22 inch side and consist of what I measured as 2 - 2 inch diameter hoses and 1 - 3/4 inch vent. Thanks for your help. Charlie