I have a 125 aggressive that i set up and im looking for food to feed i was told to go to the local groccey store and buy some mussles and clams so i bought some now how is the correct way of feeding these? do i open them throw the meat in? do i some how clean them so bactria doesnt get into my tank? can i buy alot take the meat out and freeze it? what do you guys do/ think?