Dead spot on Monti cap

[ReeferBee]

Any idea what can be the cause? Odd because it's near the center of the cap. Its on my graft cap and starburst cap too.

 

[HB AL]

Look on the underside for white Montipora eating nudibranchs, especially in the dead spot.

 

[ReeferBee]

I checked. Last night and again tonight. I don't see any. I'm really hoping it's not them. I had a problem with them 5 years or so ago in another tank. Never seen them start in the center of a Monti before. Crossing fingers

 

[spspirate]

Was detritus settling in that spot? Or perhaps salt creep sinking off something above and landing there?

 

[Bj’s Reef]

I'm having the same problem right now. So hopefully someone can give us some answers.

 

[Scurvy]

+1 on something probably settling in that spot.

 

[tcarter1936]

I hope it's not Monti nudis too. But all mine started in the middle when I had them. Try a uv flashlight at night.

 

[Jlentz]

It's most likely either nudis or detritus buildup/salt creep burn.

I suspect nudis. If you can dip it do a revive dip asap.