I have been making RO/DI water into a 20 gallon Brute trash can, the gray one, which I believe is food/aquarium safe. I have noticed that the sides of the container feel a bit slick to the touch after a week or so. Slimy is a bit of an overstatement, but it definitely feels like there is a film forming. The TDS meter says 0 and the other filter stages are pretty new too though it happened before I changed those as well. Has anyone else seen (or felt) this before? I am using it to mix up salt water now, since I finally about ready to start my first reef tank. Just want to know if there is something I should be concerned about before I dump it into my tank.
Thanks!
Thanks!