Ask-a-Dave's-Gardener: White flecks on Moses!, 2 by lafemmekatia

lafemmekatia wrote:
I have just recently received a baby Tradescantia Spathacea and I love it. The person who gifted it to me grew it from a cutting and it was rooted in water. I potted it with commercial “cactus and succulent” soil, it’s what I had.
It’s two weeks later and every morning for three days, I find little white fuzz along the edges of the leaves. Just the edges. I washed it off of course.
I will try to send a photo.
It does not look like a living creature, it has no legs, etc.
It looks like tiny flecks of chalk.
Help! I love this plant!