zoa issues

Ive had this colony of green zoas for a month now and some have these black strands coming outta them and they wont open?? All the others are healthy and standing proud!! any suggestions??

 

are the strands black or dark red?

 

Take a soft brush and clean the algae or sediment from around the ployops and the rocks. Or check to see that a jet of water is not by chance blasting them in that spot?

 

Black , can u see them in the picture !!?:-/

tangster , i have moved the whole rock around and blown any possible algae and debris, some are trying to come out but it seems the black stand thingy is stopping progress !! a pair of tweezers maybe!!

 

My guess would be regurgitating zooxanthellae.

 

This what some of mine looked like a long time ago when they were stressed.

Regurgitating zooxanthellae

 

yeah mine dont look that bad . the best way to descibe it , looks like a feather duster tube but black and not hollow

 

That pic was taken when I took them out of the water and they looked more like blobs then. I couldnt get a good pic of them in the water, so I removed them.

 

Zoanthids by Eric Borneman
(Aquarium.Net January 1998 )


Good article on zoanthids by Eric Borneman. Husbandry and zoa health problems discussed.

While I did not see your particular problem discussed...he did cover a number of items that can cause zoanthid demise or poor heath conditiions.

 

have you taken a brush and cleaned the area vlowing at it may not remover if I think you have a sponge growth of some type maybe a cyano ? Brush them off