Exo Terra Bioactive Volcanic Substrate 406 The 13 mm glass Inline

The 13 mm glass Inline Diffuser is a pollen style inline CO2 diffuser that is placed in the outflow line of the filter or aquarium pump to efficiently diffuse CO2 gas into the aquarium

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

coarse particles that have made it through the first layer are trapped

A highly nutritious

Exo Terra Bioactive Volcanic Substrate 406 The 13 mm glass InlineThe 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,