ClinkerMedium™ (1/8–1/4 in)

ClinkerMedium™ is the perfect balance between texture and function — a naturally forged clinker rock substrate born from Wyoming’s historic coal fire seams. Each piece tells a story of earth and heat, hardened into lightweight, porous granules ideal for aquariums, reptile habitats, and terrarium landscapes.

Sized between 1/8–1/4 inch, ClinkerMedium™ offers superior drainage, structure, and visual texture, making it an excellent choice for medium-sized reptiles, amphibians, or as a base layer in bioactive setups. Its rich volcanic red and earthy brown tones bring a natural aesthetic that enhances any display environment.

Key Features

• 🌋 Authentic Wyoming Clinker Rock – Formed by natural coal seam fires, creating an exceptionally durable and porous stone.

• 💨 Balanced Particle Size – Provides excellent aeration while maintaining stability in tanks and terrariums.

• 🐍 Ideal for Medium Reptiles & Amphibians – Great for bearded dragons, skinks, tortoises, and geckos.

• 🐠 Aquarium Safe & Inert – Non-toxic, pH-neutral, and safe for freshwater or hard-water systems.

• 🌿 Perfect for Terrariums & Planters – Promotes drainage and prevents root rot in planted builds.

• ♻️ Sustainably Sourced from Wyoming’s Natural Deposits

• ⚖️ Particle Size: 1/8–1/4 inch (approx. 3–6 mm)

Recommended Uses

• Reptile and amphibian terrariums

• Aquarium base or mixed media substrate

• Drainage and filter layer in terrariums or potted plants

• Natural decor, landscaping, or geologic art projects

Packaging

Each ClinkerMedium™ batch is washed, dried, and screened to remove dust and fine particles before packaging. Sold in clear resealable bags with ScoriaSupply’s signature labeling.