Black Algae?

7thheaven · 03/16/2009, 10:07 AM

Hi all~

This is not mine but I also want to know what it is..

He said it is not definately cyano bacteria and seems like a algae.

It is always existed regardless of light..

And the growth rate is so fast

He did not dose any biological or chemical supplement at all.

This picture is taken by mobile phone.

3D-Reef · 03/16/2009, 08:49 PM

Well...I haven't heard of a black algae,not that it isn't an algae,I just never heard of one that color.I would be more inclined to think it is a sponge or a fungus,because they wouldn't need light like an algae would.

Mentat · 03/18/2009, 08:33 AM

Can only see dark areas on picture provided, guessing it's a filamentous black growth. When he tears or pulls a piece out, does it float? Also, what are his phosphate and nitrate levels?

graveyardworm · 03/18/2009, 05:27 PM

I've also got some black mat type stuff growing in patches. It tears out pretty easily. I'm pretty sure its a sponge. I really havent examined it closely yet.

03/16/2009, 10:07 AM	#1
7thheaven Premium Member Join Date: Jul 2001 Location: seoul,korea Posts: 742	Black Algae? Hi all~ This is not mine but I also want to know what it is.. He said it is not definately cyano bacteria and seems like a algae. It is always existed regardless of light.. And the growth rate is so fast He did not dose any biological or chemical supplement at all. This picture is taken by mobile phone.

03/16/2009, 08:49 PM	#2
3D-Reef Registered Member Join Date: Aug 2005 Location: Wichita,Ks Posts: 421	Well...I haven't heard of a black algae,not that it isn't an algae,I just never heard of one that color.I would be more inclined to think it is a sponge or a fungus,because they wouldn't need light like an algae would. __________________ Life on earth depends on plants-without plants,no life.Alf Jacob Nilsen Current Tank Info: 125 DT,135 grass fuge/sump;29g seahorse tank 70 fuge/sump

03/18/2009, 05:27 PM	#4
graveyardworm Team RC Member Join Date: Nov 2003 Location: Nottingham, NH Posts: 7,272	I've also got some black mat type stuff growing in patches. It tears out pretty easily. I'm pretty sure its a sponge. I really havent examined it closely yet. __________________ -David- President - New Hampshire Reef Club There’ll be no one to save, with the world in a grave Current Tank Info: 100 gal lagoon/seagrass, 100 gal sump, Lifereef 72" skimmer, 180 inwall, 125 inwall seagrass/lagoon in progress

03/18/2009, 08:33 AM	#3
Mentat Registered Member Join Date: Oct 2008 Location: Virginia Beach, VA USA Posts: 1,168	Can only see dark areas on picture provided, guessing it's a filamentous black growth. When he tears or pulls a piece out, does it float? Also, what are his phosphate and nitrate levels?