Question on flower pot coral

[Toffee]

Hi, I got this about a week ago from an ads of my LFS. It was great just like this photo.


However this morning it turns out like this. I had it at least 4 to 5 days by now.



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[Toffee]

The second photo is what it looks like at 10pm now

Third and fourth photo is what it looks like around 6pm today.

I just ran all tests to make sure nothing wrong. All my others corals are fine.

I used to have it middle of the tank for lighting, now I moved to lower due this sudden retraction. It never happen like this. It looks like all the flowers are gone leave white skeleton.

Lights are kessil with 85intensity and 75colors running 4hrs.

Am 0
Ni 0
Na 0
Ph close to 0

Cal 380
Ak 12dkh
Ph 8.3

Sal 1.024

I dose for cal little a day and letting AK use up by its own. Water change once 2wks for 10%， 75g tank. 2 jabae 25 , skimmer octupus 150

If anyone have suggestion of increasing cal and lower AK faster pls advise, thanks.

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[Toffee]

This scared me a bit, but I am happy to say this morning most of the flowers came back out again. I might just over panic...



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[Sniperhank]

That is typical behavior out of flowerpots. They are odd coral, but with an awful life expectancy in the home aquarium.

 

[54seaweed]

flower pot are one of the hardest LPS corals to keep , I had one years ago when I first started it lasted 2 years I got lucky with that one , since than I never have had any last more than a month if that ,
they all look healthy than just out of no where they go on the decline, the one I have now is a little over a month old looked healthy still does but it recedes it's flesh about a 1/4 inch every 2 days , they are one of the hardest LPS corals to keep in captivity,
I don't expect this one to last till the end of the month ,
I have tried both aquaculture and wild coral neither made a difference , I know these corals don't last but for a odd reason they just draw you in .

 

[Toffee]

They do, they are so beautiful.

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