Spots and more spots

[gngrhill]

Boy, sometimes I just wish an experience orchid grower could just enter my grow space and tell me where I'm going wrong. I have spots. All my dens are affected in some way (except my nobiles ) Very small , pitted, black spots. some have lots of spots, some have just a few. some are on the old leaves, some are on the new leaves. Some are even affecting the tiniest new growths coming up. For reference, my temps now are averaging 65F days and 55F nights. Humidity is ranging from 55 to 80 depending on how cold it is outside to keep the heater running. Some are under the t-5s, but I have moved most of them out from under the lights because I thought it might be the lights or heat from the lights causing the spots. I do not mist, so no water on the leaves. I have tested for virus, negative. I just don't know what I need to change to make them stop. Leaves all looked ok when I got them, so it has to be me