I recently ordered some tubos, what they are isn't important here, but I pulled a few out of the tubes to let them rest in the humi for smoking, and I notice white spots on them. I take them out and brush them off with my hand, the stuff comes right off like powder. First time I've seen this. Is this some fungus, should I take them all out of the tubes and clean them off, what's the meaning of this white spot phenomenon?

since you described it as spots...it sounds like mold to me. It seems odd though that it has happened in more than one since the tubes were sealed. Maybe try and post a picture of it and see what others think

Sounds like mold. Not drastic but not desired. Brush it off and smoke them if you like them or return them to the sender.

I had a similar occurance with some Don Diego Tubos from another supplier. Smoked a stick but didn't like them (too mild) so I just tossed the sticks. They were part of a special where your buy this and get a free 10 pk of Diego Tubos. No big loss, I kept the Tubes and turned them into mini travel humidifers (give 'em a scrubbin', punch some holes with a nail or thumbtack, add some oasis foam and 50/50)

If you like the smokes, isolate 'em, from your other sticks so it doesn't spread. Brush off the fluff and light it up.

To keep this from happening to the rest of your stash, try to keep the humidiy level below 75%. When you push 80%, mold is likely to set in.

mold brush and smoke.

Usually mold isn't white and powdery, and doesn't just brush right off. However, I do notice that some cigars arrive like this every now and then. Oliva O Maduro is the first cigar that comes to mind. It's old mold, that will not grow back. Simply brush it off and enjoy your cigar. But, check the foot. If you see mold in the foot of the cigar, you may not want to smoke it - it could make you a bit sick.