thanks guys for all your help. i went out today and got some marine salt , changed the water and raised the ph to 7.7 and cartman is like a new fish ! since i put him back in the tank he hasnt sat on the bottom once, like he has done for the last 3 days. i only added 1/2 the suggested amount of salt as i dont know if he was in brackish water at the pet store. i will raise it more slowly.
once again
THANKS!!!!!
once again
THANKS!!!!!