I just swapped out my old 120v incandescent white light and enclosure with this LED light at 12v that fits right over the existing niche. But it is forming these white flaky things all over, what the heck is that? I did a different LED light in the attached spa (same water) and it’s doing fine! Any ideas? Poor metal in the light housing? There’s no power to it (switch is off) if that matters.