Strange Grey Fuzz on Rocks

borillion_star · 09/09/2011, 09:38 PM

Hey Im trying to figure this stuff out and have not been able to ID it,
it has me worried a bit, doesn't seem like its spreading but I want to know
what it is.

#144EA4

zigzag1 · 09/10/2011, 09:33 PM

First pics look like beginnings of GHA. 2nd of a pipe & wire also show high nutrients. JMO & GL!

preef · 09/10/2011, 09:41 PM

Don't think it is GHA. I have something like this on the underside of my rocks where it is dark. If it is the same thing that I have it branches out at the tips. I've never been able to figure out what it is. Participated on some threads trying to get an answer but nobody could ID it even though a few others had it. I used to have a lot more of it when my tank was newer.

borillion_star · 09/11/2011, 12:18 AM

Im very sure that whats on the rocks isn't algae it has no color is somewhat grey. I would say it appears that it might branch, its seems not to have spread to the other rocks. Im told its possibly a sponge of some kind, but I have never seen sponge like that

Im debating pulling it and soaking on fresh water for a couple days.

borillion_star · 09/11/2011, 03:48 PM

Ok so I emailed the guys on WWM, this is what they say

I have been having quite a time trying to figure out whats growing on one
on my coral skeletons, it resembles green hair algae yet has no color or is perhaps white or grey and seems to branch in some places.

Does anyone have any idea what this is? I was told that it may be some
type of sponge but I dont feel that's right.
is likely a blue-green/Cyanophyte... See WWM re, including limiting
nutrient, other means of control. Bob Fenner>

Taino Man · 09/12/2011, 01:43 AM

Do you ever turkey baste your live rock off? It helps out in keeping that stuff down. Least that's been my experience, looks like detritus buildup IMO.

Posseidon · 05/10/2013, 02:13 PM

Hi,

I'm having the same problem in my tank. Were you able to identify it? What causes it? How did you get rid of it?

Please help me fight this stuff before it takes over my tank.

09/10/2011, 09:33 PM	#2
zigzag1 Registered Member Join Date: Oct 2005 Location: Anderson, Indiana Posts: 1,276	First pics look like beginnings of GHA. 2nd of a pipe & wire also show high nutrients. JMO & GL! __________________ :beer: Mixed Reef, started 10/2004: 6' BB 125g DT, 100lbs LR, 40g sump, Dual Ehiem 1000 returns, Eshopps dual overflow, JBJ ATO, Vertex IN-180, PM Ca reactor, 250w MH w/VHO Actinic, AC3 w/Aquasurf, Tunze 6105 pair & 40B frag tank 8 Fish, 20+ corals, shrimp, snails, worms, bugs, etc.

09/10/2011, 09:41 PM	#3
preef Registered Member Join Date: Feb 2009 Location: Algonquin, IL Posts: 809	Don't think it is GHA. I have something like this on the underside of my rocks where it is dark. If it is the same thing that I have it branches out at the tips. I've never been able to figure out what it is. Participated on some threads trying to get an answer but nobody could ID it even though a few others had it. I used to have a lot more of it when my tank was newer. __________________ 72 gal bowfront mixed reef. Tank born 10/14/2007

09/11/2011, 12:18 AM	#4
borillion_star Registered Member Join Date: Feb 2008 Location: San Jose Posts: 297	Im very sure that whats on the rocks isn't algae it has no color is somewhat grey. I would say it appears that it might branch, its seems not to have spread to the other rocks. Im told its possibly a sponge of some kind, but I have never seen sponge like that Im debating pulling it and soaking on fresh water for a couple days. __________________ Look at all the Swimmies!!! The ocean is the place for me :P Current Tank Info: 46 Gallon reef tank Last edited by borillion_star; 09/11/2011 at 12:28 AM.

09/11/2011, 03:48 PM	#5
borillion_star Registered Member Join Date: Feb 2008 Location: San Jose Posts: 297	Ok so I emailed the guys on WWM, this is what they say I have been having quite a time trying to figure out whats growing on one on my coral skeletons, it resembles green hair algae yet has no color or is perhaps white or grey and seems to branch in some places. Does anyone have any idea what this is? I was told that it may be some type of sponge but I dont feel that's right. is likely a blue-green/Cyanophyte... See WWM re, including limiting nutrient, other means of control. Bob Fenner> __________________ Look at all the Swimmies!!! The ocean is the place for me :P Current Tank Info: 46 Gallon reef tank

09/12/2011, 01:43 AM	#6
Taino Man Registered Member Join Date: Aug 2009 Location: Northern California Posts: 166	Do you ever turkey baste your live rock off? It helps out in keeping that stuff down. Least that's been my experience, looks like detritus buildup IMO. __________________ Live For Today, Hope For Tomorrow!!! Current Tank Info: No Tank at the moment. Will be setting up an Innovative Marine 50 Gallon EXT very soon.

09/09/2011, 09:38 PM	#1
borillion_star Registered Member Join Date: Feb 2008 Location: San Jose Posts: 297	Strange Grey Fuzz on Rocks Hey Im trying to figure this stuff out and have not been able to ID it, it has me worried a bit, doesn't seem like its spreading but I want to know what it is. #144EA4 __________________ Look at all the Swimmies!!! The ocean is the place for me :P Current Tank Info: 46 Gallon reef tank

05/10/2013, 02:13 PM	#7
Posseidon Registered Member Join Date: May 2013 Posts: 138	Hi, I'm having the same problem in my tank. Were you able to identify it? What causes it? How did you get rid of it? Please help me fight this stuff before it takes over my tank.

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