Sounds like hes probably stressed. The salt should do him well... if you can up the air that would also help with the stress.
Also just found this thread. I have about 15 years experience personal/professional with aquariums, and have worked for a local aquarium. Feel free to poke me about any questions. Most of my experience is tropical fresh water fish, but can help with salt water as well.
Also just found this thread. I have about 15 years experience personal/professional with aquariums, and have worked for a local aquarium. Feel free to poke me about any questions. Most of my experience is tropical fresh water fish, but can help with salt water as well.