There is a link on my yahoo home page to look up words. Those definitions came from The American Heritage Dictionary. I mean't to reference that but forgot.
I would think that a jar a small as your's would be too small to mantain a healthy culture for long. I moved and no longer have my fish or my barrels of daphnia but I still do have a 3/4 gallon jar that has some daphnia in it but they die off and then I get a population of other copapods, mostly ostrocods, for a while. then they die off and the daphnia come back. That's been going on now for about 15 years. I had is sealed for most of that time with no water changes. Frankly, it did better when I left it alone in a basement window.
The water in it is a slightly yellowish green but I've never had an algae bloom in it and it never produces enough of anything to be usful for anything but looking at. I suppose if you were to grow green water in a seperate container and transfered it into the daphnia culture when doing water changes you could get a better population growth, You should probably mantain several greenwater cultures for each daphnia culture or use roti-rich, that stuff really worked for me, maybe even better then greenwater.