help. Crabs dying

currentking

New member
all of my emrald crabs and decorator crabs are dying. Fish and all coral doing well. Water was good last time it was tested
 
How old is the tank? How long have the crabs been in the tank? What else is in there? What equipment are you running? Have you changed anything recently? Has anything new been added to the tank?
 
When was the last time the water was tested? Define "good" do you know the actual parameters, before they began dying and now?
 
the tank has been up for more than 6 months. I have a 65 gallon with yellow tang,6 line wrasse, true percula clown, and a cardinal. Only new coral I have added were a couple Aussie acans. Water is perfect according to my LFS. No nitrites, nitrates at 15. Ph8.4 no phosphates. It doesnt look like something killed them. Could it be lack of food?
 
pls describe what you mean by dying. are you seeing them kill each other? are you just finding empty shells? are you just finding legs and crab parts on the sand? do they die all at once overnight, or one per day...etc... if everything is "fine" in your tank, they should not be dying, so (I think) either you have a predator in the tank, or they are molting
 
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