I've been noticing practically ever since I put my U. gibba into its little bowl that there is little bits of fluffy sorta white/gray stuff that settles on the sides of the glass, and then eventually falls to the bottom of the bowl. A bit even seems to "grow" on my plant, yet my plant is still quite green, and I'm not sure if it grows or not, since it's kinda hard to tell with a mat of green stuff. Is this some kinda algae? Originally, it was growing in a terrarium with 82 watts of light 15 hours a day, and about 80* F in the day, 70* F in the night. But, I ran out of room there, so I moved it into my new spacious terrarium, where it gets 84 watts of light 14 hours a day, and around 72*-75* F in the day, 65*-68* F in the night. In both conditions, there was still this white fluffy stuff.
Here's its bowl:
It is in about 1.5"-2" of water all the time, and no peat or anything. Though, the previous owner of the plant grew it in a pot, and there is a bit of peat and stuff on it.
Here is a bit of the fluff growing on the plant (it's kinda hard to see):
And here is some fluff on the bottom of the bowl, in the center of the pic:
Can anyone tell me what the heck this stuff is, and is it harmful?