Exo Terra Rain Forest Substrate 26.4L (PT3118) | Tropical Vivarium Bark Mix

The ET Rain Forest Substrate is a 100% natural, biodegradable substrate blend designed for humidity-loving species kept in tropical vivarium setups. Combining sustainable Maritime Pine bark with natural Sphagnum moss, it suits reptiles, amphibians, and invertebrates from rainforest environments where consistent moisture and good aeration are essential.

Composition & Natural Sourcing

Made from sustainable Maritime Pine bark and Sphagnum moss, this substrate contains no artificial additives or binders. The blend is heat-treated to reduce bacterial contamination before it reaches your vivarium, giving you a cleaner starting point when setting up or refreshing a terrarium.

Humidity Regulation

The Sphagnum moss component gives this mix strong hygroscopic properties — it draws in moisture and releases it gradually, helping to stabilise ambient humidity levels without manual intervention. Consistent humidity supports healthy shedding cycles and reduces the risk of respiratory issues in susceptible species.

Planted Terrarium Performance

The bark particle size and shape are well-suited to planted setups. The structure allows water to move through to root level while maintaining enough air pockets for healthy root growth — a balance that generic substrates rarely achieve. This makes it a practical choice for bioactive or naturalistic vivarium builds.

Biodegradable & Terrarium-Ready

• 100% natural and fully biodegradable
• Sourced from sustainable Maritime Pine
• Sphagnum moss inclusion maximises moisture retention
• Heat-treated to reduce bacterial load
• 26.4L bag — suitable for medium to large terrarium setups

For keepers building tropical setups with live plants and humidity-dependent species, this substrate handles the environmental groundwork so you can focus on the animals.