Yeah. The whole point of the thread was to find something that wasn’t pvc pipes. Lol.
Cool beans then! 3D Printing can definitely provide tons of non-PVC pipe options.
That said, as a design method, there are a lot of downsides to 3D Printing. I think this piece would work much better if you can injection mold it. This could allow a smooth surface (if desired), rigid structure, make it easy to clean with chemicals, and easy to clean by scrubbing. And provide easy options to use a material that is non-reactive and with a high density. This material could still be PVC (in non-pipe form) or another plastic.
Ooo... Another option in place of injection molding! You could melt down and recycle your own HDPE at home and press it into molds. It’s actually quite easy and cheap. I’d first have to check the properties of HDPE with Saltwater... but I think it might be fine. You would at least want to stick to either virgin material or a food-safe HDPE though.