Radio Psychedelica

Daphnia continues to thrive in its jar. The other aquatic life - the mosquito larvae and so forth have perished. the green algae has settled to the bottom of the jar. Several hundred daphnia swarm in the bottle. I wonder how long they will thrive. The bottle's neck is plugged with a bit of cotton wool, so it is not quite a sealed enviroment; still, they've survived longer then I expected.
Now I wish I had taken several jars full, and sealed a couple off as experiments.