help with mold on dendrochilum moss

[HItransplant]

I have an dendrochilum which is planted in moss. The plant has just started to spike (and there are a lot of spikes-- will more than double the p-bulbs on the plant). Unfortunately I just noticed a fair amount of gray mold has formed on the moss. This moss was not there a week ago.

background: I have had this plant about a year with no mold troubles to date. I water when the moss is drying out which is roughly every 3-4 days. water has 1/4 strength fertilizer just about every time. Now, as it is colder, I have been watering less. These bulbs are the first growth the plant has demonstrated since I got it.

Any suggestions on how to remedy this situation. I really dont want to disrupt these bulbs.. but obviously dont want to lose the plant either.

help help help.

thanks