LECA, or Lightweight Expanding Clay Aggregate, is an exceptional option when crafting your terrarium. It's also a popular medium for potted plants and hydroponics.

Benefits:

• A high amount of drainage yet retains water; enough to return to roots when needed.
• Lightweight (protects the glass and makes moving easier)
• Environmentally friendly
• Incredibly durable under pressure
• Promotes aeration within your ecosystem
• Does not rot or decompose over time
• Popular alternative growing medium
• Ideal for hydroponics