Coral slowly dying

[Nemo1]

I’m not sure if this is an sps sorry if it’s in wrong place
Had this from a friend about a week ago, I’m not sure what it is but it seems it is slowly starting to die, all other corals seem to be doing fine, I do believe this to be the only sps coral in the tank any thoughts as to why and how to make it happy?
from the image the area circled used to be the same as the rest but now it’s just normal rock?

 

[GabeM]

Looks like dying montipora - likely not enough light

 

[W1ngz]

That looks like a plating monti cap. Needs high light and decent water flow, also low but non 0 levels of nitrate (under 10-ish) and phosphate (under 0.1, closer to 0.03-0.05).

 

[Tahoe61]

Looks like Montipora, an sps.
Montiporia can bleach secondary to significant lighting changes.

You will need to test alk, calcium and maintain values within normal range to keep successfully.

 

[Nemo1]

My lights are Red Sea led 90s, I got told they were way to high at my settings on a previous thread about algae
I’ve attached my lighting and calcium is 420 Dkh is 10
Nitrates 5

 

[GabeM]

What is your par level? My moni caps are sitting around 350

 

[Nemo1]

Honestly got no idea, they are near the top of the tank so I imagine quite high?

 

[W1ngz]

Where is the coral in relation to the light? Do you have a full tank shot you can post?

 

[Nemo1]

Lights are off for tonight, so doesn’t look too great right now
It’s The one right in the middle

 

[W1ngz]

Hard to judge the size/depth of the tank but this video should give you a reasonable way to guess your light intensity.


I don't think light is your problem, could be phosphates, could be general instability of the tank parameters. The tank looks quite young.

 

[Nemo1]

It is young but seeded with live rock and media from a one year old tank

 

[W1ngz]

Seeding a tank doesn't fast-forward a tank's age, it just gets the ammonia under control faster. There's a thousand other things that are still unstable, not the least of which is the person managing the tank. Not a criticism, just part of the learning curve.

How stable have all the parameters been over the last say, 4 weeks? Including nitrate, alkalinity, calcium, magnesium and phosphate? Is it stable day-to-day, or are you still at the 'fix the parameters on water change day' stage of things?

 

[Nemo1]

Still not completely stable yet, only 3 weeks old, I’ll put it in another tank until I get the one it’s currently in more stable

 

[W1ngz]

Monti caps grow quick, I'm sure your friend won't mind giving you another piece a little later when you've gotten the tank stable. It's a great test SPS coral!

 

[Nemo1]

Thank you for the help! Hopefully I can get it to be happy when it’s more stable.