I also heard about using small pieces of PVC pipe with
hose clamps. I think I like the idea of sections of old garden hose better.
The chemicals involved in the small amounts of epoxy used on a hose, spread throughout the nearby soil mass, should not result in any meaningful level of toxins. Of that, only a tiny fraction would be carried up into the plant.
If you are concerned, I know there are marine epoxies for aquarium use. If they don't kill sensitive little fishies, I doubt it'll hurt people. Once an epoxy cures it shouldnt be reactive.
I have heard people say electrical tape works, but I am skeptical. I have heard Gorilla tape works and that is plausible- and I have some. I can try it out and see.