Sudden Wilting, Dehydration & Black Spots Dendrobium

[dianecty]

When I received a dendrobium stratiotes I bought on Ebay on Thursday, the roots were dead and there were black spots on the leaves. I thought the black spots were from the scattered charcoal media in the package. I don't remember the condition of the stalks. I know the stalks were never plump.

Friday night, I noticed the leaves and stem suddenly shriveled and were very dry. I sprayed the leaves with water and it helped a little bit.

Saturday morning, it got worse and so I soaked the entire plant in banana tea which alleviated the dryness a little for an hour and put Root Magic on the roots, thus the powdery look of the roots. I placed the roots inside a PET bottle not touching the water below to encourage it to form roots.

I realized belatedly that my plant might be sick.

Is this fusarium? I wiped each leaf with hydrogen peroxide and sprayed the stalks with Daconil. I did not cut open the stalk to look for the purple ring.

Is this plant salvageable, what is wrong with it and what should I do? I took the pictures this morning Sunday and so within 4 days it deteriorated to this state.

Thanks for any advice!