Tank builder suggest something called great white or something... a magnet , also suggested chemical free magic eraser.
Just want to keep it as nice as possible for as long as possible.
I bought that 12” Albino for the tank before I’d heard of the potential damage.
May play it safe and get a Flagtail....
I have a tiger shark magnet from the same company. Tiger shark because I have 3/4" acrylic and didnt want much stronger magnets. I've also tried with magic eraser.![]()