You might try making infusoria just by putting a lettuce leaf in dechlor water.
In a jar. Look at The Lounge Coffeehouse thread someone just described how to do it.
Also bee pollen is used to feed baby shrimplets maybe it would work.
Try carefully as it spreads all over!
Prana (deep blue/purple CT female) Fluval Spec 2
Qi (turquoise CT female) 5 g riparium
Vanilla Beast (Ivory apple snail diffusa), Watson and Crick (Amano shrimp), Tributary (Moss Ball aka AquaTribble) Fluval Spec V
Pond and ramshorn snails (so many!) 2.5 g
Mr. And Mrs. Smith (assassin snails) 0.5 QT tank
Leopard ramshorns 16oz NPT Mason Jar