![2-in-1 Worm Farm Maintenance Mix (pH Buffer + Grit)](http://www.tricityworms.com/cdn/shop/products/2021-09-1813.38.18_{width}x.jpg?v=1631997912)
A special mix of oyster shell flour and rock dust, serving as a natural source of pH buffer and grit for healthy, happy worms.
This is an add-on item. Standalone orders have a minimum purchase of $20 and additional shipping fee may apply . Orders with add-on items only that do not meet the minimum purchase amount will be cancelled.