Help with Phal disease

[Manu]

Hello everyone,

I am starting to worry about a few of my Phalaenopsis orchids... all my plants were doing fine until end of summer beginning of fall this year. I now have a phal bellina that has a bunch of white spots on all its leaves except the most recent one that is still growing. A Phal equestris that has yellow marks from the top of the leave and under its brownish and I have 2 hybrids that are showing some similar marking to the equestris but in a more advanced stage. All the affected plants have been in my collection for a year or more.

I guess now is a good time to mention I've been fighting spidermite for a few months....

Reading online and self diagnostic is starting to freak me out... is this the orchid fleck virus????

I've attached images.
The first one is the P Bellina. Notice the white spots.
2nd 3RD is equestris. Top of leaves has yellow spots, underside brown spots.
4th and 5th are a hybrid, notice the yellow spot near the crown...
6th and 7th another hybrid, this one has bad marks on top and bottom of leaves..

The spider mites are pretty much under control for now. Have many phals that do not show any marks at all, both species and hybrids. A few others just a small spot but nothing worrying. Paphs, oncidium, catasetum, draculas all seem untouched. It doesn't seem to be progressing anymore, however this all happened in about 2 months so I am still very concerned.

I went to my local nursery were the Bellina comes from. I noticed many of their phal species had similar issues to my bellina and equestris. I asked them about it. All those plants come from Ten Shin Orchids (and all my species collection comes from TSG as well).He claims to have spoken with Matt who says the white spots as you can see on my bellina be caused by high temperature fluctuations. This theory does work based on when it happenned and the bellina did suffer a drastic drop from high 20s to low 20s (Celsius) in october but I'm still doubtful especially with the markings on the other plants.

Any help is appreciated. Feel free to ask for better pictures angles details etc.