Zoo Med Eco Earth substrate by Zoo med is a Loose Coconut Fiber Substrate that is an eco friendly product made from the husks of coconuts and can be safely composted or recycled into potted plants or gardens.Made from the husks of coconutsFor use with damp tropical speciesAbsorbs and breaks down odor and waste productsIt is ideal for naturalistic terrarium type set-ups incorporation reptiles, amphibians or invertebrates. Use it damp for tropical species as it naturally absorbs and breaks down odor and waste products. Add Eco Earth loose coconut fiber substrate on top of Zoo Meds HydroBalls to create an ideal drainage layer for optimum plant growth, humidity and drainage in naturalistic terrarium.