Thank you everyone. This plant has been isolated from my other orchids. It is the only one with this problem.
Ursula...Thank you for linking this.
Jim...I will go back to using epsom salt in misting and every once in awhile watering. I am on a well and not sure what minerals we have in the water.
Daisy...I sterilize my cutting tools with pure rubbing alcohol and do not do cross cutting on plants without doing that between each one. I sterilize my pots with soaking in bleach and water for a couple of hours or longer and rinsing well and put in the sun to dry. I never reuse media. In fact I bad it up and put it in the trash.
I will also back off the watering and see what happens. It begin mounted I water it everyday, the plant is outside. I will wait and let the moss go completely dry and then water it. But like you said the plant is very health except for this leaf. It has put out a new root and putting out a new leaf in the crown. If it was a virus the plant would be sickly looking.
Ted...I sterilize my pots with bleach and water and scrub them good with a stiff brush. Rinse them with good clean water andput in the sun to dry. That is what I do.
