I have this Doritonaeopsis Luchia Roseherz x Dtps. Sogo Toshiba since April. I bought it in bloom, and it was quick to loose all its blooms. Its also been slow to grow. Its got thinner roots than all my other phals, and now this!
I take a look at it today and find its 2nd newest leaf is turning yellow!

And the underside looks bad too.
And the oldest leaf is also turning yellow. I wouldn't be worried about this one normally, but having two yellowing leaves is worrying.
The newest leaf has been growing slowly, and has an uneven surface. Am I giving it too much light???
OK, thanks for all and any advice!