Forget the stop leak. It softens ALL the seals in the system.
Just buy a replacement hose for it ,
Stop leak is a used car lot fix, it can cause a lot of trouble in the long run.
Chances are it wouldnt help with the leak in that hose anyway.
Remember, what you put in the system affects every part, not just the one you want, could be good , could be bad. Are you a Gamblin man?