C-Bears wrote:
The Flush King allows you to back fill your black tank from the bottom with a lot of water. Simply keep your gray tanks closed and use the Flush King to rinse out your black tank as many times as you want. If you decided your gray tanks need a cleaning, then close your black, open each gray tank one at a time and use the Flush King to rinse those out. Finally, the Flush King give you an extra gate valve at the end of your sewer boom so you are sure to never have a surprise when setting up camp and taking the cap off of the end of the sewer boom.
I use both on our rig. What I like about the Flush King is it seems to put a lot more water in the tank in a much shorter time than the tank flush. Also nice to do the gray and galley tanks once in awhile. The Flush King did remove a stubborn paper clump that the tank washer was having problems with.