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 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 terrariums All natural green" product" Pack of 2 › See more product details