Lightweight Expanded Clay Aggregate, or LECA for short. Elevate your indoor gardening experience with this versatile, eco-friendly, and highly effective growing medium. Use LECA as a standalone growing medium or mix it with your favorite potting mix to improve aeration and drainage. It's perfect for a wide range of applications, including potted plants, indoor gardens, hydroponics, and more. Elevate your gardening to new heights with LECA. Provide your plants with the ideal environment for healthy growth, root development, and vibrant foliage. Make the smart choice for your garden today with Lightweight Expanded Clay Aggregate. Your plants will thank you! Small (8 oz): Fills approx 2-3 4" Pots Medium (24 oz): Fills approx 6-8 4" Pots or 2 6" Pots Large (64 oz): Fills approx 7 6" Pots