Hknsa Carmela

[Lin]

I've had this in my front bay window (faces NW) for about a year. It has grown and bloomed.

In February I added two T5's as supplemental lighting. Watered all the orchids, and within the next couple of days, noticed marks on the leaves of this one plant. I could have gotten water of the leaf. The pattern was similar to popped soap bubbles. Isolated it, and kept watch and nothing much happened. The leaves are slowly looking worse but the damage is not spreading. These were taken today.

I don't know what it is, the youngest foliage is fine and it has three new shoots. Any ideas??