lights and algea

[perculaman]

I have a 55g FO tank my water is in perfect condition but i continue to get only brown algae. I dont mind getting green algae but I hear brown algea means something is not right with the tank. I have had my tank for 1 year now. Im wondering if it is the light. How long does my light usually last or how often should they be changed. I have a 40W power-glo.

 

[mr . salty]

A tear on a bulb is pushing it.You should replace them about 6-9months MAX. How about Phosphates?? How long are the lights on per day?? these also are major causes of algae.Also nitrates.

 

[perculaman]

Thanks Mr. Salty for answering my question. My lights are on 6-8 hrs a day but i get direct light from a window. I need to check my phosphates. But why is it brown instead of green?

 

[corky]

It is recommended that "no" direct sunlight be allowed to hit a fish tank. This can cause an outbreak of algae(and not the green type).