That also occurs if you dont use plant fertilzer.

"Paulo Almeida" wrote in message
news:1044486201.589180@newsfront1...
My Java Fern is begining to apear with some brown areas in the leafs (like
a
burn, but brown insted of black).
I believe that the excess of light is not the problem, and i think this is
a
plant that doesn´t need a lot o light.

Any ideas? Could it be lack of any nutrient?