Black and brown algae found. Help

[roh]

I noticed a black and brown color algae in my tank recently. When I first started the tank, everything seems to be ok. My co2 is working and lights is on only in the day. Can someone advice how to get rid of the algae. Thanks

[Shadow]

photo might help to identify the algae. Is it those brown color algae that stick on the glass? If so, ottos will eat it.

link below should be able to help you
http://www.theplantedtank.co.uk/algae.htm