On Fri, 16 Apr 2004 16:36:09 GMT, "John D. Maag"
wrote:

I have a new Aquarium. 75G with Wet Dry. and I just finished my cycle. I
used Fiji Live rock to do the cycle. I have introduced 3 tangs, an royal
gramma and all are doing fine. I also introduced 2 Emerald Crabs and they
are also fine (though hidden).

The question is I have tried introducing 8 cleaner shrimp and all have died
with one hour of being in the tank. i would appreciate any knowledge of what
could be causing this. I have not used copper pipes or any shapre or form in
any way associated with this tank. What I have done is used PVC pipe (and
glue) for the water supply and return from the filter.

Salinity is 35% (I use a salinity meter not Hydrometer)
Ammonia is undetectable
Nitrites are undetectable
Nitrates are 2-3 mg/l

Hello John,

What sort of fish do you have ?

I am sure that my Lemonpeel Angel tolerates cleaner-shrimps for
several months, then kills them one after another, within a few days.
I have not seen it attack any of them, but as they disappear, the
angel looks "fat" along with a few of the other fish. If you feed
shrimp to the aquarium, it may become familiar with the taste and
smell of shrimp, and decide that they taste better than they look !!

Regards, Fishnut.