Brown/green stuff in the sand

[Hoopastank]

over the past few days some brown green stuff has shown up on my sand bed. Today I noticed some of it looked slimy and has bubbles. What is this stuff and how do I get rid of it?

 

[KJ]

DIATOMS:

Diatoms are just a natural things that happens in a new aquarium and will normally will subside with in a few weeks to a couple months.


ID: This Algae normally forms on the sand, glass and rock work of a new tank. It has a variety of colors from a dark reddish color to tan, brown and green. On a lot of occasions there will be oxygen bubble's trapped in the algae from photosynthesis.

HOW TO CONTROL IT:
Medium to strong flow across the sand bed and rock, and watch the amounts of Silicate being added to the system ( top off water and water change purity is the main cause for silicate being introduced to the system )

NATURAL HERBIVORES:
Astrea snail, Turbo snail, Tangs, Trochus snail, Almost all blennies.

 

[cloak]

Cyanobacteria is another possibility. This doesn't always have to be that maroon color were all so used to seeing.

http://www.reefcleaners.org/nuisance-algae-id-guide

 

[Breakthecycle2]

Nah, thats cyano.

 

[KJ]

Dinoflagellates

 

[Breakthecycle2]

Dinoflagellates

This picture floats around as "dino's" sometimes.This is NOT a picture of dino's. This is a bad case of cyano. I know, because my tank was covered in this..covered. I removed phosphates and added better flow and it was gone in two days.