Originally Posted by Dano
I have never seen or kept live Black Worms...............I have used the frozen and freeze dried stuff............What keeps them from over populating and becoming a nuisance?...............What are some of the other possible down sides of having them in a tank?.......I find the idea interesting and may try it..........Any more info you care to add may be beneficial to me and other members..................Thanks for posting this
In a tank without an undergravel filter they get eaten by the fish (my tank has one albino rainbow shark, one raphael striped cat, one Boseman's rainbow, some Kuhli loaches, two hill stream loaches [Borneo Sucker Mouth is one nickname], and the pair of swordtails). Usually 95% of the worms are eaten in a months time, the worms will pretty much burry themselves in the sand with 1/4 or more inches waving in the water like grass.
In a tank with an undergravel filter you won't see the ones that are under your filter plates and occasionally you will see them in the substrate, if they come up too far out of the gravel the fish get them.
In the 20 gallon tank I have when they come up through the gravel and are in the moss the shrimp will eat them as well as the guppies and guppy fry that is older than a week old. I have had a few re-enter the main tank by traveling up the tube and working their way through the granulated charcoal filters, these usually get eaten before they get back to the gravel substrate.
Picture of blackworms in sand substrate: