Chemical warfare?

[picoreef2.5]

Hello, roughly three months ago I purchased a frag from a lfs and it had zoas and blue clove polyps on it here it is a few days after acclimationthe day after two more months along a few days ago i did a 50% water change to deal with a hair algae problem the clove polyps struck back anyone seen this star like behavior in zoas?


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[picoreef2.5]

This is today


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[Sniperhank]

Possible, but I'd also want to suspect the alkalinity level in the tank.

 

[picoreef2.5]

Salinity 1.024
pH 8.4
Alkalinity 3.4meq/l (9.52 dKH)
Calcium 420
Magnesium 1300
I believe the ph dropped over time from tops offs then this last 50% water change it got fixed, do blue clove polyps open and close depending upon ph?


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[Sniperhank]

A sudden change could have done that. I've seen polyps and zoas live just fine together, but them going chemical could be in the cards. I'd keep some carbon running just in case.

 

[picoreef2.5]

I have carbon in my filter, swapped it out about a month ago for a fresh one, i just turned on the blue light, in an hour ill turn on my t5 and take pics , well see who got to the light first today


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[picoreef2.5]

Also has anyone see zoas do this weird star thing?


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[picoreef2.5]

Iits back to how it was now


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[Sniperhank]

If your alk levels were fine...what was your phosphate level? I've heard of polyps not doing well in too clean of water, pulsing xenia comes to mind right away.
That said, whatever happened the zoas have out competed the blue polyps for sure. I wouldn't expect to see them again if they went away so quickly.

 

[picoreef2.5]

Im unsure but i also have xenia and they are doing great


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[Sniperhank]

Then the zoas nuked them.

 

[Reefing Madness]

I've never seen Blue Cloves die out so easily. Usually people are ripping their tanks down because they can't get rid of those things. They are like Xenia, and grow faster than a weed.