what is this?

[Ariel110G]

what is this on my sand bed, its been live this for about 3 weeks

 

[PhoenixOne]

It could be a Brown Algae or Dinoflagellates.

 

[QueensRob]

Your phospates are high prob. Time to switch your GFO and carbon.

 

[Ariel110G]

I guess it from over feeding, I love feeding my fish and coral.:wink1:

 

[QueensRob]

We all do starting off and then that happens. I still feed 3 times a day but rowa phos and carbon, and only what they can eat in less than a min.