Brown Spots - Algae?

[skllkd]

Hey everyone,


I’ve started to notice brown spots in my 10 G planted tank - it’s on certain plants, on the driftwood, the rocks and on the glass.

Does anybody know what this is? And how to get rid of it?

Infos about my 10 G planted tank:

- Ammonia 0, Nitrite 0, Nitrate 5ppm
- airstone running 24/7
- mostly Anubias and Java Ferns
- couple rocks and a piece of driftwood
- using liquid carbon (API Co2 booster) dosed 1ml everyday, and liquid fert (seachem Flourish) dosed 1ml twice a week.
- lighting is 7.5 W - on for about 12h a day

Thanks

 

[JLeeM]

How long has this tank been set up?

 

[skllkd]

How long has this tank been set up?

It’s been set up for about a month now

 

[JLeeM]

It’s been set up for about a month now

My guess would be brown diatom algae. It may take a while, but it'll eventually consume all the silicates in the tank and die out itself. You can also manually remove, or get something like a nerite snail to help out a bit.