Hello all! Newbie potter here. I've had some pieces sitting in damp boxes for... many months now! And while a few pieces have the requisite mold, my pieces thrown with local porcelain, Clay Art Center Mac 6, are growing this strange flaky crust. Does anyone know what this could be? Will it be a problem after bisque firing? Can I wipe it off and still use underglaze before firing? Thanks so much!