Generous sized bag of green sand - around 6 to 6.5oz. Worm castings - .5oz (full bag
green sand is made up of a variety of organic Marine sediment from the bottom of the ocean. Meaning it is rich in a large variety of vitamins and minerals.
Worm castings is the end-product of the breakdown of organic matter by earthworms.These castings have been shown to contain reduced levels of contaminants and a higher saturation of nutrients than the organic materials before vermicomposting.
OR to put it simply... Consider green sand and worm castings your hermit crab's daily vitamin supplements. It is recommended that your hermit crabs have access to both at all times!
Worm Castings come in a porous bag and it is recommended you store the worm castings in a porous bag/container.
Worm Castings Source: ABG Farms in Lawrence, Kansas
Green Sand Source: Ocean floor