tank cycle

Ok so i got a 90 gallon and have it all set up with a algae scubber and bought 100 pounds of sand that came out of a tank that was set up for a long time.  the water has finally cleared and now i have like a 1/2 inch of what looks like dust on top of the sand.  what do i do next?

 

Did you rinse the sand at all before adding it to the tank? I would vac the sand clean if it were me. By the way did you get that pump working?
-Bill

 

yeah i went through all of the sand. yeah i took it apart and there was a little plastic piece. thanks man. did you get the nano up?

 

Yea it's up and cycled! I'm thinking about hitting andy up today for some corals.

 

sweet ill be ready to see it. do i need to put a cleaner crew in mine or just vacum the sand

 

I would vac the sand at this point.