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Zoo Med HydroBalls



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

how many inches of hydroballs do you add in the bottom, before adding screen then subtrate? used them before but i can"t remember. they are great.