I just found out today that my grandmother from out of state passed away. So my family and I are going to take a 2 to 3 day trip to go and be with my grandpa. I won't have anybody here to feed my fish or take care of them. The only thing I'm worried about is food. I don't have much money to be spending on feeders and such but I could probably buy a slow release food "disk" or something like that but are there any other recommendations?