What is growing on my coral?

[Jamon]

Hi,

Something is happening to my corals and I have no idea what. They are turning to mush. My parameters are in check, what could this be? Any advice would be hugely appreciated.

 

[Uncle99]

What are those parameters?
Your check and others may be different.
What is the age of your system?
What is the daily flux of Alk and Salinity?

Many issues can be easily overted by stable water chemistry, the #1 reason things go wrong.

 

[Cell]

Looks like BJD, brown jelly disease.

 

[Dburr1014]

Looks like BJD, brown jelly disease.

Yup

 

[Jamon]

BJD? Another thing I'm hearing about for the first time. Wow. Thank you everyone, I hugely appreciate it. They died and I removed them, but hopefully it saves the other ones.