Red branching monti dying... Bleaching? Oorrr??

[Electus unus]

I've had this piece of red monti for about a month now and it's been doing great until about three days ago. I've got duncans, blastos, rics, zoas, acans, etc. all thriving. But this mont started either bleaching or peeling? It started as one little patch, and now 60% of the frag is bone. It doesn't look like faded color. It's as if something's pecking it, or something I can't see is eating it. It's basically chunks missing... Any idea?

 

[Usernam Invalid]

List of tank parameters n pic would help

 

[Electus unus]

Nitrite and ammonia steady at 0. Nitrate MAYBE 5. Calc : 480-500. Dkh 9-10. Mg:?(ruined the test kit a faucet explosion.) about a 10% water change every 2-3 weeks. Picture will have to wait til I'm home from work. I can't find a reason for this decay. As I said. Every other tank inhabitant is thriving.

 

[DDon]

First thing that comes to my mind is monti eating nudibranch.

 

[Electus unus]

I've looked closely with an led and a magnifying glass at night, in hopes of seeing something like that, to no avail.

 

[SPotter]

what kind of fish do you have? i had a clowny goby that liked to sit on my montis and the same thing happened.

 

[PaleHorse]

Just dip it. ....

 

[Fishy 1]

^^ agreed