Red Wiggler Worms: Compost Champions
These specialized worms transform organic waste into nutrient-rich castings for plants. Each worm produces 1-2g of castings weekly, boosting soil fertility by 30%. They tolerate various pH levels (5-9) and reproduce quickly in proper conditions. European Space Agency trials showed they thrive in waste-heavy systems similar to those expected in Mars habitats. Modular composting units could directly integrate with greenhouse waste streams, creating efficient nutrient loops.