Grey fluffy thing on driftwood??

[fishingBuds]

I have around 8 or 10 pieces of driftwood inside this aquarium and this is the only one with this grey fluffy thing, which is the biggest piece I have. All other driftwood is normal and not presenting any algae or fungus growth.

This piece was in another aquarium of mine with the same gear (and it also had the fluffy grey thing), i had to transfer everything from one aquarium to the other because of leaking issues.

I dont know what this is and apparently neither the internet.

20g tank setup:

+Ph near 6.5
+gh 80ppm
+Lighting for 8 hours a day
+airpump 24/7
+2 plecos
+9 green fire tetras
+3 blue rams
+2 algae eaters
+5 ghost shrimps
+A few snails (ramshorn, bladder, and assassins snail)
+Nilocg fertilizer once a week
+Excell twice a week

[Aiken Drum]

Looks like a mold or fungus. Take it out clean it off, boil the driftwood.

Alternatively you could try a spot treatment with seachem excel.