Help: Still having Floating dust in my aquarium

[Sicketor]

1 month after tank was cycled.. and i still have this "dust" floating in my tank,
i got an atman EF-4 filter.

any1 knows what is this stuff?

added a video of the problem..

https://youtu.be/AV5TOrB4WXM

 

[Mebbid]

It looks like micro bubbles to me. Cut the air stone for a day or two and see if it goes away.

Alternatively, scoop some up in a clear cup and let it settle overnight. If it settles to the bottom then you should be able to see it. If it disappears then its air bubbles.