- Arcadia EarthMix Arid is a naturalistic, bio-active ready substrate designed for reptiles and amphibians from arid and desert habitats. This specialist blend uses the same organic base as Arcadia EarthMix, but with added organic volcanic rock to increase drainage and boost bio-available mineral content. The result is a clean, mineral-rich substrate that works exceptionally well in dry, naturalistic and bioactive enclosures. It helps keepers create a more realistic surface for arid species while still supporting the key elements of modern enclosure design, including live plants, clean-up crews and species-appropriate enrichment. Why Choose EarthMix Arid? EarthMix Arid has been formulated for keepers who want a more natural, well-draining substrate for desert and arid species. The blend includes 30% volcanic lava dust, helping improve drainage while increasing mineral content for a more wild-inspired substrate profile. This makes it particularly suitable for enclosures where a drier surface is needed, but where keepers still want the flexibility to support planted areas, natural digging behaviour and carefully managed humidity zones. Bioactive Ready from Day One EarthMix Arid is designed for bio-active keeping from the start. Custodian species can be added from day one, where they can establish quickly within the balanced mix of minerals and organics. The carefully considered blend helps support the custodians commonly used in bioactive systems, while also providing a stable base for longer-term naturalistic enclosure maintenance. Drainage, Minerals & Natural Function The added volcanic material helps EarthMix Arid provide excellent drainage for arid and desert setups, while also increasing mineral richness. Arcadia highlights this as a more natural, full-spectrum substrate concept for species from drier areas of the world. When suitably hydrated, the substrate can also help support tunnel and burrow formation and may be used as part of naturalistic egg-laying areas. It can also provide enrichment through the natural resistance and texture animals experience as they move across and dig through the substrate. Live Plants & Adaptable Humidity Although designed for arid and desert enclosures, EarthMix Arid can still support the sustained growth of suitable live arid plants. This makes it a strong choice for keepers wanting a planted bioactive enclosure with a natural visual finish and improved environmental enrichment. The substrate can also be managed to provide different moisture levels within the enclosure. For species requiring a little extra humidity, the mix can be lightly sprayed more regularly, or moisture can be concentrated in one area to create a localised humid zone while retaining a drier overall setup. Key Features: Bio-active ready substrate for arid and desert enclosures Supports live custodians from day one Includes added volcanic rock for improved drainage and mineral content Contains 30% volcanic lava dust Supports sustained growth of suitable live arid plants Can help support burrowing, tunnels and egg-laying when hydrated correctly All-natural ingredients Made in Britain Directions for Use: Add Arcadia EarthMix Arid to the enclosure to create a suitable depth for the species being kept. For best results in bioactive systems, combine with appropriate live plants, leaf litter, hiding areas and a suitable clean-up crew. Where burrowing, tunnel support or egg-laying areas are required, adjust substrate depth and hydration to suit the species. Moisture can be focused in one area for species that benefit from a localised humid zone while retaining a drier enclosure overall. Suitable For: Arid and desert reptiles Arid and desert amphibians Bio-active desert and dry naturalistic enclosures Planted arid vivariums and terrariums Frequently Asked Questions: Is Arcadia EarthMix Arid bioactive ready? Yes. EarthMix Arid is bio-active ready and suitable for custodians from day one. What makes EarthMix Arid different from standard EarthMix? EarthMix Arid uses the same organic base as EarthMix original but includes added organic volcanic rock to improve drainage and increase bio-available mineral content. Can I use EarthMix Arid with live plants? Yes. It can support the sustained growth of suitable live arid plants, making it a strong option for planted naturalistic enclosures. Can it support burrowing and egg-laying? When suitably hydrated, EarthMix Arid can help support tunnel and burrow formation and may also be used as part of naturalistic egg-laying setups. Is EarthMix Arid suitable for species that need a humid area? Yes. While designed for drier setups, the substrate can be managed to create a localised humid zone by limiting misting to one area where needed.