Bucephalandra leaves turned white

[leedsrhinojohn]

I put in some Bucephalandra Crisped Leaves and Ive noticed that on all 6 plants one or two leaves have gone all white but the other leaves are all fine.
What is this and what can I do?

 

[leedsrhinojohn]

Anybody?

 

[G H Nelson]

https://www.ukaps.org/forum/threads/white-leaves.51821/
hoggie