You still have an older T@B- right? Do you mean the fill pipe from the fill port on the driver's side? I only ask because I don't have a clue on how water is put into the tank with a nautilus. I add somewhat diluted bleach through that tube when I annually "sanitize". I also don't actually drink water from my tank. And hello.
I just realized you probably mean "garden hose rated for potable water." sorry. I never replace it, but do make a very real effort to gravity drain all water from it.
Yanni Lazarus 2020 T@B320S, 2018 RAV4 Adventure, Central CT
It's probably not a bad idea to hang it somewhere, fill with a little diluted bleach, and let it sit for a bit before rinsing well. Same goes for any jugs you use to fill the fresh water tank. I do this with mine... sometimes. I don't get too knotted about it because these items get flushed well with use and typically do not remain wet for long periods of time. YMMV.
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I just realized you probably mean "garden hose rated for potable water." sorry. I never replace it, but do make a very real effort to gravity drain all water from it.