Spirulina Algae powder for hermit crabs Food group: Aquatic Plant Litter makes up 20% of their diet. Organic Spirulina Powder is packed with nutrients, antioxidants & anti inflammatory. You can use the spirulina powder mixed with coconut oil or honey as well as mix it with their food.. Plastic Cups?!? Why? We use PET plastic containers, that are food safe & 100% Recyclable. PET is approved as safe for contact with foods & beverages by the FDA & health-safety agencies throughout the world. PET does not contain bisphenol-A (BPA) or phthalates (plasticizers). Fully Recyclable PET is completely recyclable, & is the most recycled plastic in the U.S & worldwide. Organic Spirulina Powder For Hermit Crabs