Need a little help here. Is this RTN?

[ekford]

This started last night with just tips. Got home today and this is what it looks like now. Is this RTN?

I've had this Birdsnest for approx 2 years and has a healthy grower. It is the only SPS in the tank.

No recent changes to equipment or livestock.
Tank parms:
pH 8.11
Salinity 35
Alk 10.92 dkh
Calcium 478
Mag 1350
Nitrate 0.05
Phos 0.04

 

[Syntax1325]

Looks to me like the coral in the lower right (galaxy?) of the picture may be stinging it. Some of the branches look white but they look like they have polyps. There seems to be tissue loss but it looks like it is being caused by contact with another coral.

 

[ekford]

I think you are right! It is amazing how we overlook the obvious and always assume the worst. Looks like it's time to rearrange.

Thank you

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