I'm trying to do this again... Man these buggers are hard to keep. If you think keeping fish is hard.. try breeding daphnia! I experimented quite a bit. You see... I have a dog.. and it goes about it's natural business... so I had this idea of putting some of it's business into the daphnia bucket. It worked for a few days until I decided to add more of it.. and some old bread. Poof the daphnia all died overnight and the smell... whoa. This time i'm trying with a chunk of bakers yeast, the wet type which will hopefully release the yeast slowly into the water for them to feed on.