Black water tank rinse connection leaks

[zinom]

The nut holding the "Plex" elbow near the top of the Black Water Holding Tank is cracked and leaking when I rinse the tank. I could not stop the leak by placing a hose clamp around the nut and it appears the crack may extend into the fitting as it goes into the tank. Has anyone replaced that fitting?

[EngineerMike]

For a temp fix try several wraps of Xtreme Tape (self vulcanizing) then the hose clamp. Should keep from making a big mess till you can tackle the fitting.