We've been using Angel Soft since we took posession of the Big Sky almost two months ago. With the recent discussions about the failure of Angel soft to break down in the tank we started to get concerned about a clogged black water tank. With the tank less than half full of black water we added fresh water until the tank was filled to the brim. We then opened the drain followed by turning on the tank spray for a little over an hour. When we finished we checked the tank level on the control panel and lo and behold it showed empty for the first time since we bought it.
Think we'll add the big flush to our preventative maintenance list to be done every three or four months.
