Unhealthy looking Montipora

[jschrecongost]

Hi all,

I have attached photos of my montipora digitata and my montipora setosa. Both have part of the corals turning brown, with other parts looking very healthy. On the setosa the issues appear to be on the tips, which look dead with a brown film algae growing on the tips perhaps.

The digi has branches beginning to grow near the perimeter of the coral but part of the middle has turned a bit brown. All of the other corals appear very healthy.

Any ideas? I highly doubt it’s a lighting or flow issue since the other hard corals do not have a similar issue. I am also very confident it isn’t monti eating nudis or another pest.

Water chemistry has remained stable. Alk ~8.5, Cal ~450, Mag ~1450, NO3 ~10, PO4 ~0.06. I haven’t done an ICP, but I am also pretty confident there are no metals leaching into the water. Any ideas?

Thanks,
Josh

 

[blaxsun]

I mean, it still looks healthy for the most part. Anything potentially nipping at it or climbing on it?

 

[GuppyHJD]

Hi all,

I have attached photos of my montipora digitata and my montipora setosa. Both have part of the corals turning brown, with other parts looking very healthy. On the setosa the issues appear to be on the tips, which look dead with a brown film algae growing on the tips perhaps.

The digi has branches beginning to grow near the perimeter of the coral but part of the middle has turned a bit brown. All of the other corals appear very healthy.

Any ideas? I highly doubt it’s a lighting or flow issue since the other hard corals do not have a similar issue. I am also very confident it isn’t monti eating nudis or another pest.

Water chemistry has remained stable. Alk ~8.5, Cal ~450, Mag ~1450, NO3 ~10, PO4 ~0.06. I haven’t done an ICP, but I am also pretty confident there are no metals leaching into the water. Any ideas?

Thanks,
Josh

Did you figure it out? did they recover? I am getting the same problem