Terry, didn't mean to leave you out in my request (I do realize you are a resident expert in this area) I appreciate your reply.
I am sure the tank is not over crowded. Its a 500 gal, the only fish in it are a baby leopard, bamboo, smooth hound, and volitan. They will all soon be transferred to their 1,600.
The shark has been convulsing for about 1/2 hour. The white gills have been clearing up. I realize I do not want to over stress him, but when he sits still for an extended period of time, I hold him gently and let the water flow through his gills. I could be dead wrong in doing this but it seems to be helping.
Could you clarify a little on your suggested treatment. It is 1:00am here, so a LFS is out of the question and I don't think I have it on hand. Is this somthing I can find at a 24hr drug store or
[hr]
? Possibly with an alternative name?