Brown Algae

[nanav2]

Hi...I am new to salt, have a 29G Coralife that has been set up for about 4 months. I am noticing brown algae on the bottom of my tank on the coral. What is this and do I need to worry?
Thanks

 

[Reefing Madness]

Sounds like your Diatom Bloom. Not to worry, as it will be gone when the silicates in the system are gone.