Not sure what this green is....

[Topsey]

I have noticed a new "algae" developing on my rocks and I am unsure how to get rid of it. My tank is about 6 months old, 100 gallons, and I do a 10% water change every week.

 

[trido]

Snails will do wonders.

 

[themcnertney]

Just new tank algae that comes and goes. After the one year mark, you will see less and less of this.