I Built a Glowing Bioactive Cave That Runs Itself ( Full Terrarium Build )

I built a glowing bioactive cave terrarium… and it actually runs itself. In this video, I create a custom fantasy-style cave ecosystem inside a 5-gallon acrylic bowl using lava rock, layered substrate, live plants, and a full bioactive cleanup crew. This is an open bioactive terrarium, meaning it’s a living system that continues to grow, balance, and evolve over time. What looks like a glowing cave is actually a functioning micro-ecosystem where microorganisms, plants, and microfauna all work together. --- 🌿 What I Used (Full Materials List) * 5-gallon acrylic bowl * Lava rock (porous structure for beneficial bacteria) * Aquarium-safe silicone (for structure + sealing) Substrate Layers: * LECA (lightweight expanded clay aggregate) – drainage layer * Activated charcoal – filtration * Sphagnum moss – moisture retention * Organic topsoil – plant base * Worm castings – nutrients + microbial life Custom Build Materials: * Terrarium putty (soil + worm castings + clay, 3:1 ratio) * Cork board (used as cave ceiling for future root growth) * Back wall + additional lava rock for depth Decor Elements: * Epoxy clay (for custom mushrooms + hanging dew drops) * Glow-in-the-dark acrylic paint (green/yellow glow effect) * Aquarium-safe silicone seal (to protect in humid environment) Plants Used: * Tradescantia * Purple Passion Plant * Polka Dot Plant (Hypoestes phyllostachya) * Moss (from propagation bin) Planting Additions: * Rooting powder (for plant propagation and root development) **Bioactive Crew: * Powder Orange Isopods * Temperate Spring Tails 🔥 What Makes This Different This isn’t just a terrarium. It’s a bioactive ecosystem that: * Breaks down waste * Controls mold * Recycles nutrients * Supports long-term plant growth Over time, this system will continue to evolve— with roots growing, moss spreading, and microfauna maintaining balance. --- Tags terrarium, bioactive terrarium, diy terrarium, glowing terrarium, cave terrarium, ecosystem, self sustaining ecosystem, vivarium, isopods, springtails, planted terrarium, terrarium build, miniature ecosystem, moss terrarium, fantasy terrarium