Got this beautiful dendrobium for my birthday at the beginning of march, think it might be Polar Fire, has quite a few canes on it and one spike flowering and since I got it a new spike grew with some buds. The leaves on 2 of the canes have brownish markings on them, they don't go all the way through the leaves, just on top or bottom. The spike that has been flowing doesn't appear to have them.
Is this anything to worry about? Top of the media is quite mossy. Should I be treating this plant with anything?