Bryopsis, Derbesia, and Volonia, Oh my!

[kreblak]

Can someone point me in the direction of a website with good pictures of Derbesia and Bryopsis? I have an infestation currently in progress, but I don't know exactly what is is I have. I have found plenty of pics of Bryopsis, but I can't find any good pics of derbesia.

Anyway, I added a sea urchin, an emerald crab, and some blue legged hermits to the tank to bolster my clean up crew. My hope is that the sea urchin will really kick butt on the green hair algae (whatever it is) in the tank.

Before anyone asks, yes I am using RO water.

[mogurnda]

AlgaeBase seems to be dead, but here's a link (http://www.botany.hawaii.edu/reefalgae/greenskey.htm) to a page with some geen macroalgae. I'd suggest google images for more.

Are you using RO water:D?

Anyway, it seems like it takes months or more for a tank to settle down and problem algae to become less of an issue. I still see tiny pacthes of hair algae here and there, but they never seem to do anything.