identify this algae

[duncan31]

Hi guy's.
I've a problem.In the reef tank friend have appear a this algae, but i can't identify it.
Pic's:

Mg1450
Ca 400-420
kh 8
No3 0
Po4 0'018 hanna phosphorus
Recently has turn off lights for four days, and the algae don't remit...
Anyone suggestion?
Thanks.

 

[Psirex]

looks like dead algae - this is what my tank looked like after going lights out to battle an outbreak...

 

[hanigaan]

The photography are my aquarium.
They are not dead algae. Clean the substrate, leaving clean sand and a day later reappears.

 

[Psirex]

could be cyano.... What are the water params?

 

[cloak]

Chrysophytes? I really have no idea. A shot in the dark.

 

[hanigaan]

The cyano would be dead 4 days without light.

MG:1450
CA: 400-420
KH: 8
NO3: 0
PO4: 0'018 hanna phosphorus

 

[gmate]

Early onset of a brown bryopsis, in my opinion. Never had this problem, I could be totally wrong though.

 

[Playa-1]

That don't look good.

 

[hando562]

Could it be the start of dinoflagellates?

 

[hanigaan]

The dinoflagellates would be dead 4 days without light.

 

[Travis L. Stevens]

Wait a minute, it's a little off topic, but what do you mean by "clean the sand"? Just a little off the top or were you actually cleaning through the sand?

 

[hanigaan]

Sorry but my English is very bad.

Clean all algae from the sand and the next day again the algae.

 

[austin93]

To think that dinos will be dead after 4 days lights out is very naive.

 

[jimrawr]

The sand is diatoms, reduce your nitrates. What kit are you using to test, I doubt you have zero nitrates with diatoms. The stuff on the rocks looks like a type of turf algae or hair algae that looks to be dying. I am not sure about that one though

 

[hanigaan]

The test kit is Salifert nitrate.




Uploaded with ImageShack.us

 

[hanigaan]

No comment?

 

[hando562]

Have you noticed any snails dying or sluggish?

 

[Dholmblad]

I have this same stuf alllll over my rocks. however my sand is completly clear. please let me know if your friend finds a way to get rid of it

 

[brandon429]

Notice a trend in these kinds of threads...they fall to the bottom and are rarely updated by the writer because no success is found.

If you want a specific fix, see page nine of the pest algae challenge thread. Make sure to read thread and see all pics before letting a tank stay ruined with algae. if better fixes existed, these kind of threads would have more before and after pics

 

[brandon429]

http://www.reefcentral.com/forums/showthread.php?p=19877566#post19877566