Live rock substance

[NicoC16]

I've been noticing this orangey kind of algae looking stuff growing on my live rock. I am not sure if I should be worried about it or not. Does anyone know what it is?

 

[tilton.s11]

Take a picture & post it that always helps.

 

[NicoC16]

Live Rock Substance

This is a picture of it.

 

[Masoniac]

Looks like diatoms no worries its normal.

 

[Cichlid-dude]

I agree, it looks like diatoms. Is this a newly setup tank? Diatoms usually show up at or near the end of the cycle.