My schrimps die!

[per a]

Inside the last week I've lost 1 Lysmata amboinensis, 1 Stenopus hispidus, 3 Lysmata debelius and today my Panulirus versicolor
died.


What is going on?

All my tests shows nothing unusual, the only thing I can think of is some cyano which I havent treatet yet, but can that be the cause?

All fish and coral seems unaffected, for the time, but can I expect that to change?

Plz advice

Best regards

Per

 

[itsthesong]

What are your nitrates testing at?

 

[per a]

As I wrote "All my tests shows nothing unusual" !!

Nitrates=0

By the way, when they die they dont disappear (just to rule out Mantis)

 

[per a]

As I wrote "All my tests shows nothing unusual" !!

Nitrates=0

By the way, when they die they dont disappear (just to rule out Mantis)

 

[rppvt]

did you add iodine? I've found that iodine (or lujol's solution) can stress inverts out if they're not prepared to molt. Perhaps there is some contaminant-- any strange metals?

 

[per a]

No I didn't add anything, for quite some time!

A contamination would have some effect on fish and corals as well, or?