Hi, all

I've a 20g bare bottom with Java fern, bolbitis heulodoti, bolbitis "ASIA" and Taiwan moss attached on driftwoods.

Now started growing some filamentous green algae, close the surface on Java Fern and on some moss. I already removed manually some, but they grown back again.

And now started growing some blue hair algae covering the driftwood.

I usually fertilize the tank as per instruction on the bottle and I've CO2 by fermentation.

How can I remove and control the algae safetly.

Any help will be appreciated.

Thank you
Luiz