jabsco system B29cr 2005 clogged

[mowa]

Dear all, I have a manual jabsco toilet clogged, probably by using toilet paper. The clogging is not in the jabsco system but in the big hose that goes to the holding tank. I disassembled the full system and the first meter or so of the hose is clear so the clogging must be further away. I suppose it must be where the hose connects to the upper part of the holding tank. Any ideas of how to get rid of the clog?

[Yngmar]

Drain spiral:

[mowa]

Drain spiral:

I tried but it is impossible with this. The hose have an incredible hard calcarean clog. Instead of using some explosive, I have decided to change the hose for a new one. It is complicated but is the only solution.

[Yngmar]

If you resort to removing the hose anyways, the generally recommended solution for clearing it is to grab it by the end and flog it on the ground hard until the crap flies out