P
Pete
Peggy, your advice to switch from K.O. to Odorlos in the holding thank was right on the money. We got rid of most odors after switching to fresh water flushing, but still had bad vent odor immediately after flushing. We started using the Odorlos in the tank instead of the K.O., since you indicated that Catalinas generally have insufficient oxygen intake to the tank. We just came back from a 9 day trip and had absolutely no problem with flushing odor. Thanks a lot, you made our sailing much more enjoyable!!