1) How often do you do water changes? Do you use RO/DI or tap water?
2) What are your nitrate/nitrite levels?
3) How long do you leave lights on in tank? What kelvin/type of lights?
4) Is there direct sunlight in the tank?
5) Do you have snails/crabs/algae pack in you tank?
6) Do you have a sump/refugem?

Things to make US helping YOU easier.

"Michael Lawford" wrote in message
...
Hi All,

I set-up my marine tank about 3 months ago. I still have a brown algae in
there that covers everything and I have to brush it off every 3 days.
What am I doing wrong?

~m