ok, so mabey your tank hasnt started cycling yet, or your LFS's test kits are off, once you get the test kits and see that the trates, trites, and amm. have spiked and fallen back to 0 then you can trade in the damsels (it would be better if you traded them in now, and cycled your tank with a dead shrimp instead), but most of them probley wont live through the cycle