Shrimp-o-cide! Please HELP!

[LadyFoxxe]

There is something going on with my friends reef aquarium. He is relatively new to the hobby, and he has a 9 gallon Nanoreef, with a damselfish, an engineer goby, and a few VERY small frags, and some snails. His test is no ammonia, no nitrites, .25 nitrates, and the pH and salinity is normal. When he added the shrimp (after carefully acclimating it) it was dead within 5 minutes. The LFS gave him a cleaner shrimp in exchange, and the exact same thing happened. He described the shrimp as "freaking out" as soon as it hit the water. No copper, no medications or phosphates, and his snails and corals are fine. Anyone have any ideas about what might be happening? I am TOTALLY baffled.

Thanks!