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FAQs about Green Macro-Algae Identification 2
Related Articles: Embracing
Biodiversity, Green Algae By Mark E. Evans,
Green Algae, Green Algae 2, Avoiding
Algae Problems in Marine System,
Algae Control,
Marine Maintenance, Nutrient
Control and Export, Marine Scavengers,
Snails,
Hermit Crabs,
Mithrax/Emerald Green Crabs, Sea Urchins,
Blennies, Algae Filters,
Ctenochaetus/Bristle Mouth Tangs,
Zebrasoma/Sailfin Tangs, Skimmers,
Skimmer Selection, Marine Algae,
Coralline Algae, Green Algae,
Brown Algae, Blue-Green
"Algae"/(Cyanobacteria), Diatoms,
Brown Algae, Related FAQs:
Green Macro-Algae ID 1, Green
Macro-Algae ID 3, Green Macro-Algae ID
4, Green Macro-Algae ID 5, &
Caulerpas, Green Macro-Algae 1, Green
Macro-Algae 2, Green Macro-Algae 3,
Green Macro-Algae 4, & Chlorophyte
Behavior, Chlorophyte
Compatibility/Control, Chlorophyte
Selection, Chlorophyte Systems,
Chlorophyte Nutrition, Chlorophyte
Disease, Chlorophyte
Reproduction/Propagation, Marine
Algae ID 1, Marine Algae ID 2,
Marine Algae Control FAQs II,
Marine Algaecide Use, Nutrient
Limitation, Marine Algae Eaters,
Culturing Macro-Algae;
Controlling: BGA/Cyano,
Red/Encrusting Algae, Green Algae,
Brown/Diatom Algae, | 
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What's This... Two of the same pics of hair alga 8/21/07
<Greetings, Mich here.>
I found a lot of these living in my
display tank. Are they copepods?
<Mmm, don't know. I think you
inadvertently attached two of the same pic, both of algae. If you
resent, hopefully we can ID.>
Also what type of plant is this
growing on my live rock?
<Mmm, might be Cladophora, a type of
green hair algae. If it were me/mine I would remove it before it
gained a foothold.
Cheers,
Mich> | 
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Marine Macro-Algae Identification Help 8/16/07
Hi WWM Crew,
<Nicole>
I hope you can help me identify the algae growing in my nano
reef. I had thought I saw a picture somewhere on the wwm site but tried
to find it again and couldn't. I like it, but it grows fast so I keep
hand removing it so it doesn't take over and would really rather find
something that can live comfortable in my 12 gal. JBJ nano (original
line from when they first came out!) with my 3 clown gobies (2 black, 1
green). I love watching the fish swim in and out of it! If more pictures
would help, let me know. I didn't want the message to be too big. Any
help in identifying this species would be most appreciated!
Nicole S.
(p.s. if interested you can see some of my tanks at
www.flickr.com/photos/runesrule)
<Thanks for this. This looks like a
species of Derbesia... but might be a Bryopsis... or another Green...
some folks consider these "weeds"... but if kept not-too-out-of
control... Bob Fenner> | 
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Re: Marine Macro-Algae Identification Help – 08/17/07
Thanks for
the reply. Here are some better pictures with more detail. I don't
really think Derbesia is the right species. Bryopsis is much closer I
think, but still didn't find any species with the mini shaving brush
branch look. Thanks again! Nicole
<... this looks much more like
Caulerpa paspaloides in the closer-up views. BobF> |  .jpg)
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Some odd hair algae ID? 5/10/07
Heya people!
<Hi there
Mark1>
I'd like your thoughts on this algae I've got growing in my
15g setup. I've had this algae growing since I first set up my reef
tank 2 years ago doesn't seem to be very fast in spreading, although
seems to regrow very rapidly when ripped out.
<Yes, I too have had
some of this algae in my tank.>
Its very tough and hard to rip out,
and feels very strong.
<Yes.>
Any ideas on what kind of algae
this might me?
<Is a green hair algae, perhaps Cladophora or
Bryopsis.>
And how I could get rid of it perhaps?
<Manual remove
is a good place to start, perhaps even chiseling off some of the rock,
keeping water quality high, much more here and the related links in
blue:
http://www.wetwebmedia.com/algaeconMar.htm >
It’s starting to
get too close to comfort to my zoanthid colony on the same rock.
Hope to hear from you soon.
Best regards, Mark Forsling
<A
pleasure to assist! Mich> | 
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Saltwater Question, grn alg. ID 4/8/07
Hey Wet Web Crew,
<Kristin>
I have a question regarding something that has just
"popped up" in our tank. We have a 125 gallon saltwater tank, and this
green algae looking plant started growing at an enormous rate. It has a
round structure with "blebs" that branch out, kind of reminds me of
melted wax. Currently there are two on the same rock, one is about the
size of an egg and the other the size of a golf ball. I have looked all
over, but have not found anything that looks like this. Is this
something that we should take out or leave alone?
<Likely want to
address... along with the evident BGA (the red mat.)... as very likely a
matter of excess nutrient... secondarily a lack of competition,
predation...>
I have embedded the image so you do not have to
download,
<Better to attach...>
however if that does not work,
there is an attached file as well. Thanks!
Kristin
<Do take a
look on the Net re the genera Derbesia and Bryopsis... and onto WWM re
Marine Algae, Control... can be controlled indirectly... as you will
see.
http://wetwebmedia.com/algaeconMar.htm
and the linked files
above...
Bob Fenner> | 
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Algae ID 3/19/07
I have a question about this photo (the one
you saved). The algae that he is asking about, the little green tuft
on the top left. I have this in my tank also. I know it's not a
terribly fast grower, or at least mine isn't. It feels like
Chaetomorpha, almost looks like it too except that is more straight
than curly. It doesn't grow terribly long either. Kind of grows in a
cushion. Can see some off to the right in this picture from my tank
(the color's funky because it's under actinics).
<Mmm, this looks
like Bryopsis to me... Cladophora is more "bushy",
straight, bigger,
branched...
http://images.google.com/images?q=cladophora&rls=com.microsoft:en-us:IE-Address&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7PCTA&um=1&sa=N&tab=wi>
When I was looking on WWM I found this that looks nearly
identical, though the picture is a little fuzzy. In this photo it is
ID'd as Bryopsis. I found another picture... the next one down where
a similar looking algae is ID'd as Cladophora. Are both of these
ID'd correctly? How do you differentiate between the two?
<URL
please...>
Bryopsis, a worldwide genus of Greens that appear
filamentous to spiky in aquariums... light to dark green, generally
feather-like thalli. Some Hermit Crabs, Blennies, Zebrasoma and
Ctenochaetus Tangs may eat your type... otherwise, scrubbing,
competitive algae filtration are recommended.
http://www.wetwebmedia.com/greenalg.htm
Algae ID-
These are
showing up in patches on my liverock. I am running the ecosystem and
it has been up since June, using Caulerpa as the main macro. Any clue
what it is? <It looks like Cladophora sp. macroalgae. Looks nice, if it
starts getting out of control, just about any surgeonfish or urchin
should readily chow down on it. -Kevin>
Thanks!
Adam
http://www.wetwebmedia.com/maralgid.htm
<BobF> | 
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Chaetomorpha 12/15/06
I have two different types of Chaetomorpha
growing in my 29-gallon refugium:
1. The first type is the typical
"spaghetti algae" pictured on most websites. It is very curly, and not
too dense, much like a Brillo pad for cleaning dishes. The individual
strands are quite thick, and it grows in a ball which sits low in the
water (barely any of it floats above the water, and if you take it out
of water, it collapses and lays flat).
2. The other type is very
dense and the strands are much finer & straighter. It grows in a
floating mat, maybe 2.5" thick. This type floats higher in the water,
and some of it grows straight up like grass.
New growth projects
straight out of the mat in all directions, about 1/2" long. The new
growth on the top side of the mat is out of the water, and looks like
grass. If you take it one out of water, it retains it's shape. The LFS
where I got it tells me this Chaeto grows just as well in freshwater as
saltwater. They have it growing in both types of water at the store,
and have switched it back and forth with good results.
Is the second
type really Chaetomorpha? I can't find any pictures on the web that
look like it.
<Your second type may be Cladophora, can't say for
sure without a pic.
It may also be Gracilaria, again, need a pic.>
Is it okay to have both growing in the same refugium, or will they
compete with each other resulting in reduced growth? Should I get rid
of the second type?
<Chaeto does thrive on nitrogen and phosphorous
and if the food supply dwindles, so will the Chaeto. Having the two
types together should pose no problems. It is best to thin out on a
regular basis.
If the outer edges begin turning brown, it is a sign
that the needed nutrients are absent or your lighting is insufficient
for growth.>
Thank you,
<You're welcome. James (Salty Dog)>
Steve in Denver Re: Different Species of Chaetomorpha 12/18/06
I ran Cladophora through Google Image. I have determined that my second
species of algae is, without a doubt, Cladophora columbiana. Is this a
beneficial species to have in my refugium, along with Chaetomorpha?
<Yes it is. Like Chaeto, the Cladophora thrives on nitrogen and
phosphorous.
James (Salty Dog)>
To-may-to or to-mott-o ... Chaetomorpha pronunciation
6/10/06
Hey wet-guys and gals,
<Eric>
Got a simple
question for ya. How do you correctly pronounce "Chaetomorpha?"
<"Key-toe-morph-ah">
Thanks,
Eric
<Bob Fenner>
Algae ID 6/21/03
This is a picture of what I believe to be
some form of macro algae. Can you tell me what kind it is and if it
would be safe to use in a refugium. Thanks
<Cheers, Shawn...
wish I could help you with it, mate... but the pics sent are
severely out of focus. Rather a blue. Perhaps I could trouble you to
take a portion out of water and get a clear shot of it against a
white towel?> | Algae ID
6/21/03
I think these pics will be better...
Indeed...
a Caulerpa species... prolifera type. Can be a boon or a scourge
depending on how well it is managed. Too precarious and
dangerous en masse for most aquarists (noxious exudations) but
rather handsome and good for nutrient export if you are very
diligent in keeping and harvesting it (thin fronds... never cut
them). Much is written in the WWM archives about Caulerpa,
refugiums, etc. Especially seek the FAQs. Bets regards, Anthony> | |  |
Little Green Bubble Things...
Hi guys and dolls
<Scott
F. your guy today!>
We have a funky little situation.
<As in
..."Play that Funky Music, White Boy..." or...?>
I looked at our 55
gallon reef today and noticed on a flat space on one of the LR there are
about 8 little olive greenish bubble looking things. I have no idea what
they are.
We have a hammer coral, leather coral, a white band cleaner
shrimp, pulsing xenia, and star polyp . That's it. Running around them
are what look like copepods or some other little tiny bug like creature.
Any ideas what these "green thingies" might be??? Thanks A lot. Have a
wonderful day!!!
Christy
<Well, Christy, I'd need a picture to be
absolutely sure...But I'll bet even money that what you're seeing is
some sort of "bubble algae", probably of the genus Valonia...They come
in a variety of tones, colors, and sizes, but are often a transparent
greenish color...Could be something else (like eggs from the shrimp- but
I doubt it.) entirely, of course- but that's my guess. Still funky,
though! Regards, Scott F.>
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