alright i got this brown stuff growing on my fish tank?

[Kyle J]

i think its alge but why is it brown?
alright i cleaned the filter wiped of the alge what else should i do? i changed like 20% of the water yesterday

[Crazy dude]

its old algae.

[tennismaster16666]

Algae, color varies how clean your tank is. Brown is somewhat normal. Just wipe it out good, or it will grow back. I had a lot of these on my saltwater tank.Remember to scrub the roots out. I recommend a steal sponge to wipe it.

[England Girl]

its probably old algae, or fungi or mould or something. you should clean out the tank as soon as possible coz it could poison the fish or something.

[infoman6617]

just clean it man something that need done like every week or two..... and not when it looks dirty cleanning before it happen

[Cadence's Mommy!]

get an alge eater.. =) all it is is old alge..

[Bob N]

Its algae that has been growing on top of itself. It needs to be cleaned ASAP! It becomes harder to wash off if it is left.