Aluminum Siding wrote:
For those that just dump and add back some water, do you get any off smell when it sits for several weeks or months. I dumped without backflushing only once and it got stinky. I did not add any water back in so this may have been the issue.
For me the golden rule is, whenever you dump you have to add a gallon or two of water back again, and I prefer to add black tank treatment at that time. No smell issues. However, if the trailer has been sitting for a while I treat the tank again when I next use it as the deodorizer wears off.