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• Exo Terra Sub Stratum is collected from the mineral-rich foothills of the Aso Volcano in Japan. The natural volcanic soil, formed from andesitic and rhyolitic tephra, is very nutrient rich, ideal for lush plant growth in bioactive planted terrariums. 
• The porous surface promotes drainage and aeration, supporting strong root growth. Sub Stratum’s friable, low density structure promotes a flourishing population of beneficial, nitrifying bacteria, creating a self-sustaining, living terrarium ecosystem.
• The active beneficial bacteria of the soil will decompose biological waste, keeping the terrarium clean and healthy.
• Natural bioactive soilWith live beneficial bacteriaKeeps the terrarium clean & healthyEliminates ammonia & odoursGreat drainage capabilitiesIdeal for bioactive planted terrariums