I've had a friend take care of the greenhouse last week and she noticed that a plant of Dendrobium puniceum has developed some rot. She decided to spray that area of my collection with a fungicide. Her choice was Phyton 27.... I use Phyton on Laelinae, Bulbophyllums, Angraecoids, and Pleurothallids. There were about 30 miniature Dendrobiums in the area that got sprayed. Some very rare oxyglossums and Pedlinonums!!!! I'm freaking out now. The dosage was not super high, about 1 ml per Liter of RO water. Does anybody have any experience with Oxyglossum/Pedilonum Dendrobiums and copper-based fungicides? What are the symptoms of copper toxicity and how soon do they normally develop?