Pet Forum / Aquaria / Marine Reef / June 2007

Hello.

I have a year old reef tank with not too much in it.  Lately, one of the
rocks has been growing a big "beard" of green stringy algae.  The hermit
crabs don't seem interested in it.  I think it's starting to spread to
the other rocks, and I really don't want a tank full of green stuff.

Any ideas of why this is starting to happen?  Anything I can do?

It's a 30 gal tank with some live rock, couple of clowns, 3 chromis,
bunch of hermit crabs, a shrimp, a blue star, and another fish that I
forgot its name. All basic tests are normal.

thanks,
Brandon.