Rhino makes a quality sewer hose/fittings......holds up well
I personally don't buy into using 'treatments'.....just throwing money down the drain.
If the designed vapor barriers are in good shape/functioning properly then no waste tanks odors can come inside rv.
I just use water. High liquid to stuff ratio and no issues.
If you have odors inside then something is broken.find it/fix it...no odors.
Same for dumping.....I can't smell it when dumping either because the connections/fittings/hoses have seals.
Fresh water......
Get a decent adjustable water pressure regulator and use it.
The PEX plumbing is good for over 100# but the connections/fittings are suspect.
Have seen high water pressure at CGs ......regulator takes care of that concern.
50# is good all round for use.
Filter....the in-line ones work OK but can limit gpm.
Canister ones are easy to set up and you can choose filtering medium.
