Need help, not sure what this is(white fuzz).

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It might be a bit of powdery mildew, those lower leaves look like they are touching the soil and that might be the problem. If it's just the bottom leaves, I would cut them off and make sure there is good air flow. Maybe take a look at the leaves you cut off under a magnifying glass to make sure it is not a pest type issue. If it is mold or mildew you may be able to wipe it off with a damp paper towel. The top of you plant looks nice and healthy.