Exo Terra sub stratum- bioactive volcanic substrate 8.8lbs

3 Ways to use Sub Stratum : As a sole substrate As a drainage layer Mixed in with other substrates Sole Substrate When Exo Terra's Sub Stratum is used as the sole substrate, add a layer of 2,5 - 5 cm (1 - 2 in) to the terrarium. The live bacteria will activate when the substrate comes in contact with water or waste. The organic matter such as left over food and animal waste will decompose over time. The absorbing properties of volcanic ash will eliminate odours by trapping the decomposed materials. Rinse the Sub Stratum and replace partly every 12 months. Drainage Layer  Add a top layer of biological substrate to the Exo Terra's Sub Stratum layer for optimal bioactivity and drainage. Plants can be secured in the top layer (eg. Exo Terra's Plantation Soil) while their roots will thrive in the sub layer of Sub Stratum - resulting in optimal growth. Additionally, an inorganic layer can be added first for even better drainage (Exo Terra's BioDrain) to allow excess water to flow through t