Brown Algae?

[tclark828]

Hey have had my 90 gallon set up for a couple weeks and it looks like a browins/rust color algae is spreading. You can see it on some of the live rock, over parts of the live sand, and parts of the back wall. Is this some sort of alge growth, or could it be something else? What would be the best way to get rid of whatever it is?
Thanks
TC

 

[cedarreef]

That's probably the expected diatom bloom... just keep phosphate and trates low and it will go away in time