The BiOrb AIR Terrarium Coir Compost is a replaceable substrate. This treated and sterilized growth medium is ideal for cultivating plant roots in the BiOrb AIR Terrarium. The compost is made from cocopeat, which is a renewable resource. One block is enough for a single BiOrb AIR. Composed of treated and sterilized cocopeat (coir), which is a renewable resource. Easy to use, just add water.
