Neon Hydnophora Help

[Spdjnky]

It's been in my tank for 10 Months old and just noticed this this afternoon. First Pic when I put it in 10/17

5/18/18 Below
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Just noticed this





The only thing I can think of that was different was that I had changed the flow on my Maxspect Gyre and when I saw the coral I changed it back and I am hoping that It was just that mistake I made but I'm new to the hobby

 

[Tahoe61]

Typical Hydnophora defensive response, those mesenterial filaments have the ability to kill surrounding corals. Mesenterial filaments are also used as a digestive mechanism. These filaments have the ability to reach corals over 5 inches away based on the flow.

 

[Flippers4pups]

Typical Hydnophora defensive response, those mesenterial filaments have the ability to kill surrounding corals. Mesenterial filaments are also used as a digestive mechanism. These filaments have the ability to reach corals over 5 inches away based on the flow.

Yep, be careful what you place near it. They can kill other corals quickly.

 

[Spdjnky]

It seems to be getting better now that I changed the Gyre flow But I really don't understand what you said

 

[Flippers4pups]

It seems to be getting better now that I changed the Gyre flow But I really don't understand what you said

Mesenterial filaments are sweeper tentacles that come out of the coral for defense. They touch other coral to kill them.