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FAQs on Marine Algae Identification 13
Related Articles: 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:
Marine Algae ID 1, Marine Algae ID 2,
Marine Algae ID 3,
Marine Algae ID 4, Marine
Algae ID 5,
Marine Algae ID 6, Marine
Algae ID 7, Marine Algae ID 8,
Marine Algae ID 9, Marine Algae ID
10, Marine Algae ID 11,
Marine Algae ID 12, Marine Algae ID
14, Marine Algae ID 15,
Marine Algae ID 16, Marine Algae ID 17,
Marine Algae ID 18, Marine Algae ID 19,
Marine Algae ID 20, Marine Algae ID 21,
Marine Algae ID 22, Marine Algae ID 23,
Marine Algae ID 24, Marine Algae ID,
25, & Marine Algae Control FAQs 2,
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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Looks like macroalgae growing out of Xenia... Tis! 2/16/07
<Hi Mike, Mich with you tonight.>
Have you ever seen this happen
before?
<Mmm, actually, yes.>
I don’t know if this is a
disease or a problem but I don’t think it is what a Xenia is
supposed to do.
<Xenia can have a mind of its' own. Tis neither
a disease nor a problem.>
It is splitting all the way up the
base and this green stuff that looks like grass is coming out of it.
The green stuff is now almost 1 inch long.
<No worries! If it
bothers you, you can remove the algae. The Xenia will most likely
continue to grow. Fine to just leave it alone too. Entirely up to
you.>
When I first got the Xenia (3 months ago) there was a very
small patch of this stuff coming out of the side of it and now the
grass-like stuff has grown to being almost an inch long and the
split is about 2 inches up the stalk by over 1 inch wide (split open
I mean). I’ll include a pic and all my tank parameters. Except for
being split wide open and this grass-like stuff coming out of it the
coral seems like it is doing just fine (spreading like crazy).
<Typical of Xenia. Often grows like a weed.>
Ammonia/Nitrite 0
Nitrate;5
pH;8.0
Alk
Salinity;1.025
Ca ranges between 400-425
Thanks in advance
<You're welcome. -Mich>
Mike |
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Identify Friendly or Fo ??? Phaeophyte - 02/15/07
I am a
reasonably new marine aquarist...my experience with it began last march.
I am learning as much on my own as possible, but I don't know whether I
should be researching this as a coral a mushroom or what. I id look for
quite awhile to no avail. It's a bunch of white flower looking things,
with white circles.
This is a pic. and thanks for your help in
advance!
<A Padina sp... See here:
http://www.wetwebmedia.com/brnalgae.htm
No worries. BobF> | 
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Algae id 1/27/07
I am having difficulty identifying
this. Attached is a pic of a maroon algae/Cyano growing on my rocks.
<I see it... blurry>
It is a deep maroon in color and is "fuzzy"
in appearance. My first thoughts were this is a species of
Cyano. However, unlike typical Cyano, it is not slimy to the
touch. Unfortunately you cannot tell in the picture but under close
examination, it is made of up tiny fiber-like branches interwoven into a
mat.
<Ahh...>
So far it doesn't seem to be on any sps but it
is quickly overgrowing areas in my 180. Any help on ID'ing it would be
appreciated so I can formulate a removal strategy.
Jeff
<Mmm, might be another algal group... or even an invertebrate animal
possibility... Need a better resolved image and/or microscopic
examination... Removal is likely best with a good-sized diameter siphon
if it's not too strongly attached. Bob Fenner> | 
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Brown Macro ID 1/27/07
Hi Crew,
<Tanya>
This brownish
(sometimes grayish or no color at all) algae is taking over my (reef)
tank! It came as a hitchhiker and spread like wildfire. None of the
snails or hermits will go near it. It can be pulled out as it tends to
grow in mats and tangle with itself, but because it is so brittle and
clingy, you can never quite get it all off of the rock. Can you please
ID it? And tell me what will eat it?
Thanks!
Tanya
<Likely
this is a Blue Green Algae... and not much likely to eat it
appreciably... Please read here re control strategies:
http://www.wetwebmedia.com/cyanocontrolfaqs.htm
and the linked
files above. Bob Fenner> | 
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Purple on My Glass 1/1/07
Hello there, <Hi> I need some info on
an issue with my 29 salt.
I have some light purple spots on my glass
and powerhead and other things in my tank. It won't come off with the
algae brush. The LFS said that it was ok, and he called it something but
can't remember what he called it. It kinda of crust, it scraps off with
my finger nails. Is there something that I can buy or use to get this
off at least my glass?
Thanks for your info.
Cody
<Coralline
algae, many scrappers available to remove it from the glass. See
http://www.wetwebmedia.com/corallinealg.htm for more.>
<Chris>
Re: water and algae mystery 12/29/06
Thank you for
the comments. I did find out what the starfish was thanks to you and
the LFS. I have read that in the future it could be a threat to some
soft corals. I was hoping you could elaborate on the purple 'buds' that
are popping up.
<Could be a few things... the "top" guesses w/o pix,
further description are sponges, algae...>
I have looked at tons of
algae on the internet but cant find anything that looks like it.
<There are "tons" more that aren't illustrated as yet on the Net>
Can you point in the right direction? They are small purple buds
popping up on the LR and branch.
any help will be appreciated -
thank you - Aaron
<Please read here:
http://www.wetwebmedia.com/marinvind1.htm
The files from the top
down. Bob Fenner>
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)>
Soft Coral, worm, algae ID 12/6/06
Dear Crew,
I was wondering if you could help me identify my new soft coral. It
was sold to me as a Sarcophyton sp., but it looks more like a
Sinularia sp. to me. I have attached pictures for reference.
<Is
not a Sarcophyton for sure... Likely is a Sinularia species...
definitely a Alcyoniid>
On another note, I was watching my tank
the other night and I noticed what I believe are worms, possibly
bristle worms, swimming through the tank. They were swimming rather
quickly with a cork-screwing motion.
<Good description...>
I
couldn't find any reference to similar behavior, so I was curious
about it. I have also attached a picture of one of the worms. (I
couldn't get a picture of one swimming, so it is a picture of the
worm on the glass.)
<Is an errantiate polychaete (there are
thousands of species) of some sort>
Also, I am having trouble
with, but I am not sure what type it is. I can't find anything that
looks similar to it. It grows all over my live rock and the glass of
the aquarium. I have also attached a picture as a reference.
<Are Blue-greens... Cyanobacteria...>
My parameters are as
follows:
55 gallon tank with 120 watts NO fluorescents
Temperature: 79° F
Nitrite, Nitrate, Ammonia, Copper: 0 ppm
pH: 8.2
dKH: 10°
Calcium: 550ppm
<Way too high...>
Specific Gravity 1.026
Weekly 10% water changes with RO water.
Top-off twice daily with RO water. (About a quart of a water each
time.)
Thank you for your time,
Daniel
<Mmm, please do
take a read on WWM re the groups, situation mentioned above... Bob
Fenner> |  
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