| Hi Dan,
Looks like it's a surface mold that you have. Although it's not overly harmful, it usually
exits when your media is consistantly moist and you are not getting enough air circulation.
Monitor your watering and keep good air flow around your plant. If the problem persists,
you can repot with fresh bark. I have cleaned the roots with a mild dish washing
detergent (Dove) when I water and that seems to help. Just remember, molds will
grow in moist conditions with improper light and poor air circulation.
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