Mushroom coral dying

[TJFish]

Hi, I've had several mushroom coral in my 90 gallon doing great and multiplied a lot over the last 4 years. Recently I noticed they're starting to dye and this stringy stuff coming out of them. (See picture).
A friend of mine added this other coral in there and wondering if this is the problem and it's killing my mushrooms?
Does anyone know know what type of coal this is pictured next to the mushrooms and if it can kill them?

 

[kharmaguru]

Hi, I've had several mushroom coral in my 90 gallon doing great and multiplied a lot over the last 4 years. Recently I noticed they're starting to dye and this stringy stuff coming out of them. (See picture).
A friend of mine added this other coral in there and wondering if this is the problem and it's killing my mushrooms?
Does anyone know know what type of coal this is pictured next to the mushrooms and if it can kill them?

I've never seen stringy stuff like that coming out of mushrooms. They can sometimes put out there mesenterial filaments but I've never seen it look like that. The new coral is likely a xenia (does it pulse?) or clove polyps but I don't think either are particularly hostile to mushrooms. Many soft corals can put out chemicals to fight each other or when stressed, so it would be a good time to add some activated carbon for filtration just in case.

 

[JohnL]

The new coral is likely a xenia (does it pulse?) or clove polyps but I don't think either are particularly hostile to mushrooms.

I agree

 

[Reefing102]

Agreed. Looks like Xenia. I’d run a bit of carbon to clean up any chemical warfare but I’ve never seen them affect each other like that