They do eat yeast. You need to only add a little bit so that the water becomes very very slightly cloudy.
I just like using green water to feed them. This way I could never over feed with green water.
Just take the water you get during a water change for them. Or age tap water overnight. I have a huge plastic garbage can in the backyard that gets lots of sun. I just dumped my daphnia in there once. And year after year they come back. Thats also where I dump my water changes. Then I use that water to water my plants. I still have enough daphnia after they get sacrificed to the plants
I just like using green water to feed them. This way I could never over feed with green water.
Just take the water you get during a water change for them. Or age tap water overnight. I have a huge plastic garbage can in the backyard that gets lots of sun. I just dumped my daphnia in there once. And year after year they come back. Thats also where I dump my water changes. Then I use that water to water my plants. I still have enough daphnia after they get sacrificed to the plants