Help needed with mold and dry bulb on oncidium

[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.