Help needed with mold and dry bulb on oncidium

[Dusty Ol' Man]

Originally Posted by Yevven

Thank you, but you misunderstood me. She is watered as soon as the bulbs show a little wrinkle. I was thinking about Kelpak, as I know, the recommended dosage is 3 week / dosage, but this orchid needs help, so that's why I asked if it is alright to water with Kelpak twice a month.

Waiting till the pbulbs show wrinkling is underwatering. The pbulbs should be plump. Even old back bulbs will stay wrinkle free with proper watering. Up the watering. And, other than the wrinkles, I don't see anything unusual with you plant. Whatever you are seeing doesn't appear to be mold.