Hmmm....what is going on with my Aeranthes?

[Becca]

Here is a photo I took today of my Aeranthes ramosa, I noticed the dark spots on the leaf yesterday....some on the top, including the largest spot, and a few small spots at the base of the leaf....it is only this leaf that has the problem....it lives in my orchidarium with all the other 'chids and I haven't had any other problems. Any ideas? I did bump up the level it was sitting at for light about a week ago but nothing major, and like I said that was a week ago...so I don't think it is a burn. I put some Dragon's Blood on the areas hoping to stop any bacterial problems from spreading in case that is what it is. I can't tell if the dark spots are spreading or not...it looks as though it may have gotten bigger but I could have imagined it...lol. I am tempted to cut part of the leaf off! Not the best pictures...sorry! Oh and the redish streaks going down the leaf is some of the Dragon's Blood.