Eco Earth® Coconut Fiber Substrate is an eco-friendly product made from the husks of coconuts and can be safely composted or recycled into potted plants or gardens. Ideal for naturalistic terrarium type set-ups incorporating reptiles, amphibians, or invertebrates. Use it damp for tropical species as it naturally absorbs and breaks down odor and waste products. Add Eco Earth® Coconut Fiber Substrate on top of Zoo Meds HydroBalls® to create an ideal drainage layer for optimum plant growth, humidity, and drainage in naturalistic terrariums.