What do I do

[manlykady]

There is brown stuff growing in my substrate

 

[homer1475]

How long has this tank been setup?

Looks like diatoms from the silicates in the new sand. They will burn off eventually when they consumes all the silicates in the sand.

Welcome to the new tank uglies, it's just beginning.

 

[manlykady]

How long has this tank been setup?

Looks like diatoms from the silicates in the new sand. They will burn off eventually when they consumes all the silicates in the sand.

Welcome to the new tank uglies, it's just beginning.

Oh thank god I was getting worried

 

[Glott3133]

Sorry to say, expect a lot more ugliness (hair algae, more brown, etc.). There will be a lot going on in your tank for a few months.

 

[Iamjeff6]

You ride it out, that’s what you do. Nothing to worry about.

 

[Malifry97]

The uglies...AKA The Puberty Of A Reef Tank