Exo Terra Bio Drain Substrate 2kg Aqua Zonic / Ocean Free the tech-answer is that it’s

the tech-answer is that it’s where two or more electric circuits must communicate

Dimensions 25 x 16 x 12cm

The clear cap on the pellet chamber allows close monitoring of the available pellets

Part # A20152

Exo Terra Bio Drain Substrate 2kg Aqua Zonic / Ocean Free the tech-answer is that it’sExo Terra BioDrain Terrarium Draining Substrate is a natural, non organic substrate that allows excellent drainage of the terrarium. It will not rot or decompose like other natural substrates. The optional BioDrain Terrarium Draining Mesh will keep the BioDrain Terrarium Draining Substrate separated from the decorative terrarium top layer substrate and prevent the different substrates from mixing and contaminating the water. The BioDrain Terrarium