I am a firm believer in don't fix it if it ain't broke. If the line doesn't leak I would wait for it to fail before I replaced it.
For all you know the rig might get totalled by a drunk in 2 weeks.
That being said, if you use the vehicle for long road trips or forays into remote areas with no...
Don't open your pump while it is running.
Now the fluid is full of bubbles and it was probably only low or dirty to begin with.
If it were mine I would let it sit for 24hrs than use a turkey baster or mouth pipette with a hose and remove as much fluid from the reservoir as possible.