Bioactive Crested Gecko Setup: Drainage, ABG Soil Mix & Clean-Up Crews

Setting up a bioactive vivarium for a Crested Gecko (Correlophus ciliatus) establishes a self-sustaining miniature ecosystem that reduces maintenance while providing natural humidity buffers.

Here is a step-by-step layer breakdown:

Layer 1: Drainage / False Bottom (2 Inches) Use lightweight expanded clay balls (Hydroton or LECA) on the bottom. Place a porous fiberglass mesh barrier over the clay so the substrate does not fall into standing water.

Layer 2: Substrate (3 to 4 Inches) The classic ABG (Atlanta Botanical Garden) mix is the gold standard for tropical bioactive vivariums:

• 2 parts tree fern fiber or coco peat
• 1 part peat moss
• 1 part orchid bark
• 1 part horticultural charcoal
• 1 part milled sphagnum moss

Layer 3: Leaf Litter & Clean-Up Crew Cover 80% of the soil surface with sanitized oak, magnolia, or catappa leaves. Seed the enclosure with tropical white springtails (fungal and mold eaters) and dwarf white or powder orange isopods (organic matter decomposers).

Layer 4: Live Plants

• Pothos (Epipremnum aureum): Hardy climbing vine with sturdy broad foliage.
• Snake Plant (Sansevieria): Rigid vertical resting platforms capable of supporting adult 50g geckos.
• Schefflera (Dwarf Umbrella Tree): Strong multi-branch architecture for climbing.