Help diagnosing spider mite damage

[Fredmax]

Hi,

I have no experience with spider mites and at one point saw little red spiders on my phals and wasn't sure if they would help against the mealy bugs, so I googled 'red spider orchids' and got pictures of red spider orchids

I'm learning now I may have an infestation as signs seem to point to that, the leaves on this Gramatophyllum were perfect when I bought it around 10 weeks back and have watched them develop blemishes like many other of my acquisitions, I'm hoping an experienced growers could see if these pictures indicate spider mite damage? Nothing came off when I wiped the leaves with tissue so am unsure if it's just a fungus.

For treatment I'm starting with Eco oil and mancozeb as the most readily available products that may help, I also have spinosad and pyrethrum if that doesn't help but don't want to douse plants if that isn't the issue.

I'd love to learn how to make life better for plants in my care.

Thanks
Fred