Xtremely Bloated Chromis, please help!!!

[raynist]

I received 6 Vanderbilt Chromis in a shipment this week. I put them in an established q-tank. They came in with ich, so I started hyposalinity. They ich is mostly gone, but they are extremely bloated, twice their normal size almost. They are breathing heavy. I tested the ammonia and it is not 0, but 0.5. I did a 50% water change and it is down to 0.25.

What is causing this? Their scales seem to be sticking out also. I lost 2 of them yesterday.

Can anyone help??

Thanks
Ray