Dark Splotches on Healthy Phal. What is it?
I am a fairly new orchid hobbyist and need help identifying dark spots on an otherwise VERY healthy phal. The spots appeared over a couple of weeks, and are on both top and bottom of largest two leaves. Newest growth does not have the spots. The spots are not round but are more like splotches inside the leaves. Leaf surfaces (both topside and underside) are smooth. No yellow halos. Spots are not soft nor sunken and are not blisters. The plant has not been outside and is on a windowsill with 20 more phals that have no spots. All others are super healthy. The plant is not isolated, but if it is a virus it could have already spread to the other 20. Oh dear!!!!! I have searched this Board and the internet as a whole and cannot determine what is causing the splotches and what to do. (I have Agida test kit, but hate to cut one of the beautiful leaves.) The plant has gorgeous new roots and is in spike. Any help is appreciated.
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