Expanded Clay
1 - 2 of 2 items
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Eco-RM Hydroton
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Hydroton Grow Rocks are a special kiln-fired, lightweight aggregate that is super-heated and formed into pebbles 8 - 16 mm (0.3 - 0.6 inches) in size.
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- Price: $35.95
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SS-Higromite
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Higromite™ is mined from volcanic deposits colonized by protozoa in freshwater lakes millions of years ago. Higromite is high in silica, pH neutral, and has the best moisture retention & release on the market today.
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- Price: $27.95
