Not sure what this is (good or bad) thoughts?

[WhatCouldGoWrong71]

2 weeks ago I received my ocean love rocks via overnight (less than 18 hours from order to in tank curing shipped in water). I’ve been curing for two weeks and my ammonia is at .04 and has never been above .25, so I am in good shape. Lots of really cool hitchhikers, even set up a six gallon for the Mantis that we found. I put 30 pounds on a Nuvo 20. I think this white stuff was there all along, but perhaps it wasn’t. We have multiple tanks and maybe I missed this. Anyone know what it is? I’ll post one pic here of a close up and then I’ll repost other pics next. TIA

 

[AydenLincoln]

It looks like dead coralline algae.

 

[Shibaken3]

OR DEAD CORAL

 

[WhatCouldGoWrong71]

2 weeks ago I received my ocean love rocks via overnight (less than 18 hours from order to in tank curing shipped in water). I’ve been curing for two weeks and my ammonia is at .04 and has never been above .25, so I am in good shape. Lots of really cool hitchhikers, even set up a six gallon for the Mantis that we found. I put 30 pounds on a Nuvo 20. I think this white stuff was there all along, but perhaps it wasn’t. We have multiple tanks and maybe I missed this. Anyone know what it is? I’ll post one pic here of a close up and then I’ll repost other pics next. TIA

OR DEAD CORAL

Found a similar topic here, I think the person above was right:

Thread 'Coraline algae die off!! Help?'
https://www.reef2reef.com/threads/coraline-algae-die-off-help.891255/

 

[((FORDTECH))]

Yes dead coraline. This happen to me with 200 lbs of kp aquatic Rock when had horrible ammonia Spike then couple weeks later after taking care of it

 

[Salty_Northerner]

Yes dead coraline. This happen to me with 200 lbs of kp aquatic Rock when had horrible ammonia Spike then couple weeks later after taking care of it

Yup dead for sure. I had the same happen to my good ol' real Fiji live rock back in the late 90's and my cat knocked the light into the water and the breaker didn't trip. All the colors turned white as I see in the photos. I was never able to grow it back. Something with electricity and water didn't play nice lol.