What's up with this zoa polyp?

Diveks · Oct 16, 2021

Is this zoa being eaten by something? All the other zoas are doing well, both on the frag and in the tank. Its just this one polyp. Its been in the tank for around 2-3 months. they are loosing colour in the side where the "lashes" are retracted/gone. its been like this for 3/4 days and i think more and more of its sides are gone/retracted. havent seen any pests at night.
Water params:
- alk: 7.8
- ph: 8.2
- phos: 0.04
- calcium: 462
- nitrate: 7
- mag: 1440

Pics:

blaxsun · Oct 16, 2021

Without knowing what denziens you have lurking in your tank, it's hard to say. I'd just keep a loose eye on it for any further change.

Diveks · Oct 17, 2021

blaxsun said:
Without knowing what denziens you have lurking in your tank, it's hard to say. I'd just keep a loose eye on it for any further change.

a second polyp has the same problem now. what should i do i havent seen anything on it. should i try dipping?

mdb_talon · Oct 17, 2021

I had a couple small colonies do this once. Started with just a few polyps and more each day. I found a thread here on R2R about this and multiple people suggesting chemiclean worked for them. I was not willing to use chemiclean in my system for just a chance it might improve a couple small zoa colonies, but my QT was empty so I moved them there and gave it a try. To my surprise within a day all the zoas were back to normal. I cant say it was 100% related to the chemiclean, but a few days later I put them back in the main system and they have been fine since.

I believe this was the thread I originally found that made me try it.

zoas with curled up skirts, why??

I have around 6 differnet kind of zoas and look are doing same thing, all other coral look fine why do zoas do not open completely?? I noticed that algae in glass of main dt started to grow agresivelly. Before, I cleaned after 3-4 days but after this episode glass is with algae after 1 day. I...

www.reef2reef.com

Diveks · Oct 18, 2021

mdb_talon said:
I had a couple small colonies do this once. Started with just a few polyps and more each day. I found a thread here on R2R about this and multiple people suggesting chemiclean worked for them. I was not willing to use chemiclean in my system for just a chance it might improve a couple small zoa colonies, but my QT was empty so I moved them there and gave it a try. To my surprise within a day all the zoas were back to normal. I cant say it was 100% related to the chemiclean, but a few days later I put them back in the main system and they have been fine since.

I believe this was the thread I originally found that made me try it.

zoas with curled up skirts, why??

I have around 6 differnet kind of zoas and look are doing same thing, all other coral look fine why do zoas do not open completely?? I noticed that algae in glass of main dt started to grow agresivelly. Before, I cleaned after 3-4 days but after this episode glass is with algae after 1 day. I...

www.reef2reef.com