Add a little water and natural feel to your terrarium with HydroBalls Lightweight Expanded Clay Terrarium Substrate from Zoo Med. These HydroBalls can be used underneath other substrates to create an underground water table. You can add water to create a natural aquifer and increase humidity levels. Zoo Med HydroBalls Lightweight Expanded Clay Terrarium Substrate is also ideal for live plant root growth and can be used as filtration for a waterfall.

• HydroBalls are made of expanded clay for a terrarium substrate.
• Can be used underneath other substrates to create an underground water table.
• Add water to create a natural aquifer and increase humidity levels.
• Ideal substrate for live plant root growth.
• Substrate can be used for filtration for a waterfall.