After dealing with ick, I now have stained silicon all over the tank and was wondering what are safe and effective ways to clean off the staining. Could I paint over it, if yes what paints are safe for fish? Thank you.
I'm having the same issue too, but I am just waiting for it to go away.
Cut it out and reseal, or buy a new tank. It’s not going away.
Enjoy your new blue.
It will fade over time, but won't go away. Everlasting memories...