What starts growing on all rocks ?

[kotlec]

Anybody can recognize it? It was always present in my nano tank , but at very small amounts. Now it is like burst which I can not understand why is happenning. It is covering more surface and growing much thicker.

Any input please ?

[SantaMonica]

It's algae... it has been known to appear in aquariums :)

Actually it looks like P might be coming out of your rock.

[kotlec]

Haha, and I was thinking I do not have any during last year.
But why did it rushed recently ? Was P sleeping all that time :)

[SantaMonica]

Your scrubber probably got stronger.

[kotlec]

I increased flow almost twice.

OMG measured P and I have 0.25.
Always have been undetectable. Never had to deal with it . Even dont know what to do now...
Nothing has changed in tank last months.