What Is This

[Cottonmdalton]

Got new lights in about a week ago and I see this growing on my dead Rock .

 

[Tahoe61]

If you could circle or use a point of direction as to the item you need ID'd that would help.

Just a guess based on the fact you used dry base rock then it's most likely diatoms, or cyano or a common marine algae found in cycling systems.

Did you add any live rock, sand, ......at all? It could just be a piece of debris from inside the dry rock.

 

[Cottonmdalton]

If you could circle or use a point of direction as to the item you need ID'd that would help.

Just guess based on the fact you used dry base rock then it's most likely diatoms, or cyano or a common marine algae found in cycling systems.

Did you add any live rock, sand, ......at all? It could just be a piece of debris from inside the dry rock.

I have about 10 pounds of dead rock and 50 pounds on top of it . This rock is all the way at the top of my live rock nowhere near it . And yes I used live sand as well