Help identifying algae

camera doesnt stay still enough to get a good look but could be caynobateria natural if you tank is new, but could turn into a problem siphon out and add flow to that area, or if you see bubbles develop on it after lights are on for a while it could be dinoflagellats.
 
the brown is not diatoms, there are some on the sand but not many and normal for a new tank as well, the bubbles you see are air bubbles. people often confuse diatoms with dino's.
dino's are slimy stingy and have air bubbles and diatoms just look like dust and most of the time maily on the sand.
 
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