From the inventor of the Blackworm Breeder Box Method, as featured in Amazonas Magazine. Personal starter culture from an established, biologically active system. This is not a basic portion of worms, this is a proven, self-sustaining culture built for long-term success. These worms are fully acclimated and significantly hardier than store-bought blackworms. Includes worms with all biological material intact (mulm, detritus, sponge). May be chopped to propagate, but do not rinse clean. Keep everything together. Not familiar with the Blackworm Breeder Box Method? Learn how to propagate your own blackworms today right on any tank you already have running: https://youtu.be/stEZH5UjnF4?si=-nUM-lab3lqXnsYP