Giant cup coral making tank smell like fish

[CoralBeautyII]

I have a giant cup coral for awhile now, he eats fish on his own, whatever he can lure in...clowns, chromis's, dottyback etc.
The problem is the next day after he consumes his fish prey the tank smells bad of fish.
I checked for ammonia and its still at zero, but this fishy smell cant be healthy for the tank right?
Should I try and buy him some food? like frozen squid or krill?
The room in here literally stinks, it goes away in a few days..until his next catch of the day
any suggestions?

 

[Daniel62]

Run Carbon

 

[CoralBeautyII]

thanks, just added fresh carbon
I bought some frozen krill, im hoping he will eat that? They had silversides but their usually so messy, so i went with krill, hoping he will eat it

 

[Rokwell33]

Run Carbon

What kind of carbon and can u put it in the filter sock. My lfs has carbon packs. Is that OK?

 

[justthewife]

Can you remove him? Or would you want to remove him?