Exo Terra Bioactive Volcanic Substrate 406 rinse and replace the intake

rinse and replace the intake grid and pre-filter

clear and healthy water for aquarium life to thrive

Long-lasting and maintenance-free

For tanks from 48 to 66 gallons

This high performance filter allows virtually no water from bypassing the media

Exo Terra Bioactive Volcanic Substrate 406 rinse and replace the intakeThe 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 allows for excellent drainage and aeration, supporting strong root growth. The Sub Stratums friable, low density structure promotes a flourishing population of beneficial,