paph niveum rusty leaf

[kaarthiik]

Hi ,

I recently received paph niveum. After few days its new leaf got rusty, I plucked out it and poured H2O2. It did not foam up. And after few days the next leaf started rusting. It is very firm.. And I used Physan and Bavastin fungicides and pesticides no luck.

Request to diagnose what it is! It is potted in moss and clay pieces. I had also made thick paste of Dithane and applied to crown, no luck.

Thanks,