Quote Originally Posted by FarmerTy View Post
I must be just missing the rust from the pictures as I can't see it. FWIW, I think it will have little effect on the tank as GFO is basically just iron rust. Now if its a different metal that is rusting, then there is the potential for issues there.
The plastic split and exposed the magnet and swelled the magnet and looks like the magnet has rusted away.