Need help

[Tbird165]

My tank has been setup for a couple months now and I noticed 2 days ago the sand in my tank is starting to turn brown. Is this normal?

 

[cloak]

Yeah, that's pretty normal for a tank within the first 6-8 months or so.

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

 

[Tbird165]

Thanks