gold looking algae

[steveo66]

I fired up a nano last weekend with some rock from my other tank and some rock I bought the rock I bought was white and now has alot of gold looking alga on it and my sand has hair looking algae gold colored on it my question is, is this just the tank cycleing or a concern thanks steve

 

[coralreefer]

Maybe dinoflagellates (dinos). Search for some pics and see if it looks the same. Comes from new tank cycles and too much nutrients! Most mature maintained tanks don't have dinos.