Dust?

[SuperProofer]

Two days ago I noticed this brown "dust-like" stuff on my fake plant. This is a new tank I've been cycling since Aug. 27, no shrimp in it yet. Distilled water, Instant Ocean salt (like I used in my other tanks), everything was rinsed in boiling RO water prior to placement.

If I move the leaves, the dust easily falls off, so it's not stuck, not like algae, that I can tell. Tank has been covered, can't think of anything that would have gotten inside that would explain this.

Has anyone seen this before?

Thanks in advance for your comments.

[Vorteil]

When are you going to put the opae in?

[SuperProofer]

I was planning on ordering them this week. The temps are finally cool enough in my area to have them delivered.

[Mustafa]

Could just be biofilm that first formed, then kinda crumbled away after the nutrients were used up. Could also be died off suspended bacteria/algae from the water column. My last guess would be some dusty debris from the substrate. Whatever it is, I don't think it's going to cause issues.

[SuperProofer]

Great! Thank you!