Heh, just go to the Chinese seafood market and get a pound little neck clams, a pound of snails, 2 pounds of mussels and dump them all in. Maybe even a lobster if its less than $6 per lb. Then the following weekend, harvest your seafood and make a stew,
Or you can get some live green macro algae from the shore at Ft Totum. dump that in there, filled with live critters, just avoid the little crabs, they are predators.