Legigo 10LBS Leca Balls Terrarium Substrate for Reptiles, Organic Lightweight Clay Pebbles Drainage Layer Substrate for Bioactive Terrarium, Expanded Clay Balls Hydro Balls for Reptiles Tank, PlantsBrand: Legigo Color: 10LBS Features: Excellent Drainage & Moisture Control: You will receive 10 lbs of expanded clay balls (4 16mm in diameter); Their superior drainage and aeration make them ideal for the drainage layer in bioactive terrariums, perfectly balancing humidity levels; These clay pebbles also can be used as base for substrates such as moss or coco coir to create a healthier and natural habitat for reptiles and amphibians 100% Natural Clay