Help ID this issue with Polyps

[leelee]

I am attaching a picture of polyps. Any ideas as to why they are closing up and covered with white? There is no goo or slime.

Thanks in advance,
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[radha]

Any stinging corals near them? Favia, any brain corals, anchor corals, frogspawn, torch coral? My polyps looked just like yours, and they got stung by my torch coral and closed up. I got rid of the torch (as it was stinging so many things in my tank), and just when I though they were dead, they started to come back. They are much smaller, but they are still in the process of coming back.

 

[ralph atl]

please post all your parems.

 

[jennm]

It looks like sand.. and I'm only wondering that because the rock to the left of it seems to have sand on it too. Do you have any sand-sifting creatures that could just be dumping stuff on them?

 

[leelee]

I just tested.

Nitrates 0
Phosphates 0
Nitrites 0
PH 7.2
Ammonia 0
Calcium 520

A brain coral is about 6 inches above the polyps

 

[radha]

LeeLee;365128 wrote:
A brain coral is about 6 inches above the polyps

That might be your problem. Brains, anchors/frogspawn, and torches have sweeper tentacles. They mostly put these sweepers out at night or feeding time.

 

[radha]

What's the salinity of your tank?

 

[leelee]

Salinity is 1.22

 

[leelee]

Oops. 1.022

 

[radha]

LeeLee;365157 wrote: Oops. 1.022

A tiny, tiny bit low. Regular salinity is 1.025.

 

[jennm]

I keep mine at 1.023. IMO 1.022 is not the cause of the issue.

Jenn

 

[ralph atl]

I hope ph is incorrect

 

[ralph atl]

please retest ph (what kit?). Also, get ALK results,too.

 

[ralph atl]

can you aim a powerhead towards water surface, or at least add one?

 

[jennm]

I just saw that pH... hopefully that's a typo and it's really 8.2...

I still think it looks like sand on the polyps though.

Jenn

 

[leelee]

Yes thank goodness a typo! I retested, also. Using an API test kit.

PH 8.1
KH 8

Thanks