JBL TerraSand RedSubstrate for desert terrariums, suitable for terrarium animals. For desert terrariums: natural substrate made of fine red sand, grain size: 0. 2 0. 5 mm Virtually dust free sand Fine grain encourages the natural digging behaviour of many species Round grain shape reduces abrasive effect on the animals skin To give the terrarium animals a home modelled on nature the terrarium needs to be modelled closely on the animals biotope. It is crucial that the