Commercial Caves
Resin caves come in realistic rock formations. Aquarium-safe and stable.
Prices: 5-40 USD. Many available with planted tops for dual function.
DIY Coconut Cave
Half a coconut shell, sanded smooth, boiled 30 min. Drill entry hole if needed.
Natural look, free material. Lasts 6-12 months before breakdown.
Clay Pot Cave
Terracotta pot on side or broken in half. Soak 24 hours before use.
Avoid glazed pots — glaze can leach. Unglazed terracotta is safer.
PVC Pipe Cave
Aquarium-safe PVC cut to 15-20cm lengths. Decorate with java moss or sand for natural look.
Perfect for plecos, loaches, and small cichlids.