bird's nest problem

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I bought a bird's nest a few weeks ago for my 28 gallon nano reef and one part of the coral looks like it is dying, But the rest of the coral looks great. I have metal halide lights and my water quality is fine. Any suggestions?

Thanks for the help in advance

 

[tosiek]

take a picture, and when corals RTN or start to peel away and die, The rest of it tends to look fine and healthy most of the time as it keeps on dying.

Pictures? what are your exact water parameters? anything stinging it? what fish do you have? ect...

 

[[email protected]]

I will take a picture when I get home.

I have a peppermint shrimp, mandarin, clown fish. Various zoos, palys, mushrooms, LPS, SPS etc but Nothing near it to sting it. Ammonia:0; Nitrite:0; PH 8.3; Phosphate: .01; Nitrate-0; Calcium 420-450; Alkalinity - 4.0

Thanks for the help

 

[NYPDFrogman]

I will take a picture when I get home.

I have a peppermint shrimp, mandarin, clown fish. Various zoos, palys, mushrooms, LPS, SPS etc but Nothing near it to sting it. Ammonia:0; Nitrite:0; PH 8.3; Phosphate: .01; Nitrate-0; Calcium 420-450; Alkalinity - 4.0

Thanks for the help

are you sure it's a peppermint and not a camel back very hard to tell the difference. I've seen LFS list camel backs as peppermint.
they will eat your corals

 

[[email protected]]

Def a peppermint. Will they eat corals? None of my other polyps or corals seem effected.

 

[tosiek]

its a flip of the coin as to which they would pick at and if they would at all. Just one of those things.

 

[finksmart]

cut off the dying branches to prevent it from further affecting the healthy branches