How are you watering? Spraying the leaves or only on the roots? Spots are from fungus, very common with Onc. alliance plants. Don't get any water drops on the leaves.
You won't improve existing leaves and pbulbs, but the new ones should look better.
Edit: just noticed that you have it in a ceramic glazed pot. Some glazing may be toxic to plants. If you see root tips turn brown as soon as they touch the pot, repot into something non-toxic. Terracotta pots are great, oncidiums like cooler conditions. You will have to water more often.
Last edited by ALToronto; 11-05-2014 at 12:15 PM..
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