Interesting. I use three drops of Photo Flo in 500 ML of water and have never had a problem with my Patterson reels. A difference with the water perhaps?The worst problem is you can not get wetting agent ( Photo Flow) on the plastic. Close to impossible to remove and it makes the reels sticky thus hard to load even when dry in the future.
I have both SS and plastic tanks. They both have their good points. Myself, I haven't used the SS tanks in years.