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Of course! The tubs have clean water flowing to them from the main tank, and overflow right back into the display. So water quality and water changes are not something I worry about in these cultures. These tubs can also be easy to setup on smaller tanks, I have one here on top of a 20G tank. Those HOB breeding boxes would also work, but this is much cheaper to make.
I used a thin layer of sand because it's what I had at the time. But I've learned they really love the filter sponge so I don't think it matters to much. The sponges can contain a crazy number of worms in them. I cut up the sponges to increase the surface area to volume ratio since they like sticking their tails out. Unfortunately though I don't believe they do do much self splitting this way. But it keeps them happy and encourages them to stay in the culture and not leave into the display (don't want them leaving to fast). I may try another tub soon with sand only, it would be nice to have a better idea of the population if I can see them all. They can hide so well in the sponge sometimes the culture looks empty.
I feed algae wafers almost every day, they go through them fast. I place them next to the sponges and they'll come out and clump all around the wafer. When they're all clumped out I can easily collect with a turkey baster. I collect as many as I can and put them in a cup of a water where I cut them up quite a bit with my aquascaping scissors. I place the cut up worms back into the culture. By the next day most have retreated into the sponges, some do not survive this but majority do and grow up to be full size worms. I do this once a week.
That's pretty much it, they're honestly the easiest live food I've cultured. If connected to a bigger tank all you gotta do is feed them, and cut them up once a week or as needed(not sure on best frequency but this has been working).
I also managed to grow some greenwater for my daphnia culture, so that will also be fun. All I did was leave a jar of tank water, earthworm castings, and snails under the tank lights and it soon turned green. Just need to find a better space to really get some serious green water/daphnia cultures going. Has anyone tried connecting the greenwater to the daphnia culture? So that greenwater very slowly drips in the daphnia container and overflows back to the greenwater culture like a sump? I wonder if setup right you could have an automatic daphnia culture. I want to soon try a scud culture, and maybe try culturing all those copepods I keep finding in the moss. Ive been bitten by the live food culturing bug, this is almost funner than the acutal tank lol.
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