ZooMed Hydro Balls Terrarium Substrate and Planting Medium

Zoo Med Hydro Balls are an excellent ceramic medium that can be used under terrarium and vivarium substrate. Hydro Balls are an ideal medium for plant roots. Add water to Hydro Balls and they create a natural aquifer to increase and maintain humidity. Use them to create waterfalls and other water features in the terrarium. 2.5lb. bag.