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I'm having troubles fully removing it off my aquarium glass.
I am able to remove it with a piece of plastic, but there is still this lite white circle which I cannot remove.
Be sure to wash any oil off the razor blades first. They come coated that way to prevent rust. A stiff plastic card as others have suggested might be better since the likelihood of cutting any silicone would be none. Must be tough faced with such a monster as coralline!