In alt.home.repair, on Tue, 14 Jul 2020 08:25:30 -0500, philo
wrote:

Using some clear flexible 1/4" ID PVC tubing for a warm water jet and
after two months, the inside is getting moldy.


Seems insane. Is there some non-mold flex tubing available anywhere such
as Home Depot?

Are you sure it's mold and not some sort of sediment or dirt?

Use non-clear tubing.