Zoo Med HydroBalls Lightweight Expanded Clay Terrarium Substrate, 2.5 Pounds (2 Pack)

HydroBallsâ"¢ Expanded Clay Terrarium Substrate can be used as a base layer underneath Zoo Meds Eco Earth® coconut fiber substrate or other substrates to create an underground water table in Naturalistic Terrariums. Add water to create a natural aquifer" and increase humidity levels for all tropical species. Excellent substrate for live plant root growth in Naturalistic Terrariums. Use for filtration for a waterfall." Add water to HydroBalls to increase humidity levels for all tropical reptiles Use HydroBalls and Mesh for landscaping real plants - keeps plants in place Use HydroBalls with a pump to create a waterfall and generate water flow for optimum filtration