Zoo Med HydroBalls Expanded Clay Terrarium Substrate can be used as a base layer underneath Zoo Med’s Eco Earth 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.

Can also be used for filtration for a reptile waterfall.