Exo Terra Stone Desert Substrate Ocher 5kg (PT3138) | Vivarium Sand Mix

The ET Stone Desert Substrate in Ocher is a naturalistic, sculpting-grade substrate for desert and savannah vivarium setups. Unlike plain sand, it replicates the complex soil composition found in arid environments — a blend of sand, decomposed granite, and clay that gives it the structural properties needed to hold burrows, tunnels, and elevated basking areas without collapsing once dry.

What it's made from

Real desert soils are rarely pure sand. This substrate reflects that — combining sand, granitic material, and clay in a mix that contains no added dyes or chemicals. The ocher colouration is entirely natural, making it a credible match for many arid biomes.

Build your landscape

Because the substrate holds its shape when dry, you can sculpt it into outcrops, dig tunnels through it, or build up higher basking mounds. Cool, slightly humid burrows can be created at lower levels, while the surface and elevated areas retain heat more readily — giving reptiles genuine temperature gradients to move between.

Functional benefits for your reptile

• Stimulates natural digging and burrowing behaviour
• Cool-humid burrows allow reptiles to absorb moisture through their skin while sheltering
• Elevated areas retain heat well and support thermoregulation
• Excellent thermal conductor — works well with under-substrate heating
• Does not collapse once dry, maintaining landscape structure over time
• No added dyes or chemicals

Supplied in a 5kg bag, this substrate suits keepers who want a vivarium that functions as well as it looks — giving arid-species reptiles the environmental complexity they need to behave naturally.