Help! my tire track eel jus jumped out of my tank?!?

My eel jumped and llanded behind my tank and was out for about 20 seconds i put him back in and he is swimmig fine, but he landed behind my tank so is covered in dust and particles. also i had to touch his slime coat to put him back in the tank. Is there any medications i can put in the tank to build back up his slime coat. Also what do i about the dust stuck to his face?