Silvery white haze on newer roots?

The white stuff is called “velamen”, is quite normal and consists dead cells that serve multiple functions.

• It acts as a sponge to absorb water for the plant to then slowly take up.
• It acts to insulate the inner part of the root from desiccation.
• It traps nutrient ions so they cannot be washed away.

I find that last aspect to be evolutionary genius. In nature, epiphytes get fed and watered every time it rains, but the concentration of nutrients is negligible, and they are only present in the rainfall for the first instant after the rains - often torrential - begin. Without that adaptation to “grab” them, the continued rains would wash any nutrients the plant absorbed initially.

 

Yes ditto on what Ray said, that is normal and very important it's called velamen, it acts as a moisture barrier for the root keeping it from drying out when the plant is in the "dry" part of the wet dry cycle.