Phals with root burn? what to do?

[Bundles]

Ive been noticing a change in 3 of my 4 best growing phals (3 are in bloom right now).
Ive noticed the surface of their roots are turning brown in spots... what would cause this? should i be worried, and what can i do?

sorry if the pics are a little unclear, i had just watered them.

[King_of_orchid_growing:)]

They appear to be staining from the tannins leaching out of the wood chips.

Staining of the roots from tannins are pretty common.

Let's see if others agree or disagree.

[trdyl]

Originally Posted by King_of_orchid_growing:)

They appear to be staining from the tannins leaching out of the wood chips.

Staining of the roots from tannins are pretty common.

Let's see if others agree or disagree.

I agree with you King.

[RosieC]

I agree with King as well. I've seen this lots of times and it's never seemed to cause any problem.