Sudden death of lionfish... Someone help!

[Rosey]

I've got a 200l predator system, been running for over a year with 2 lionfish (if man chu and zebra) 2 scorpions (leafy and scorpion cod) a snowflake eel, a damsel and a bangai cardinal. Everyone was fine this morning (pH 8.2, ammonia 0, nitrite 0, nitrate minimal).

What could have happened, literally went from fine to dead in 10hrs!!! So upset!

 

[P-Dub]

I've got a 200l predator system, been running for over a year with 2 lionfish (if man chu and zebra) 2 scorpions (leafy and scorpion cod) a snowflake eel, a damsel and a bangai cardinal. Everyone was fine this morning (pH 8.2, ammonia 0, nitrite 0, nitrate minimal).

What could have happened, literally went from fine to dead in 10hrs!!! So upset!

Did you happen to feed him recently and what did you feed him?

 

[Rosey]

Did you happen to feed him recently and what did you feed him?

They were all feed yesterday morning after 4 day fast and I've been feeding them saltwater prawn (raw) for the past few months. I portion control them so they get a belly after eating but not too much of a belly.. everyone else ate the same good and is fine

 

[Rosey]

Forgot to mention I lost both the fu man Chu and the zebra, the scorpions, eel and everyone else are fine

 

[P-Dub]

Forgot to mention I lost both the fu man Chu and the zebra, the scorpions, eel and everyone else are fine

At the same time as the lion?

 

[Rosey]

At the same time as the lion?

Yeah, checked everyone this morning before work then when I got home 10hrs later they were both dead. Not a mark on them

 

[nereefpat]

Any new additions to the tank? Anything wet, like fish, corals, cleanup crew, rock?

 

[Rosey]

Any new additions to the tank? Anything wet, like fish, corals, cleanup crew, rock?

Nothing new in over a month