CANNA Coco Brick Expandable Coconut Coir Substrate 2-Pack — 40L Expanded (8L Dry) Reusable, pH-Neutral

CANNA Coco Brick 40L is a compressed, organic coconut coir substrate that expands from an 8-liter dry brick into approximately 40 liters of loose, reusable growing medium ideal for container gardening and hydroponic setups.

This product is a compressed coconut coir block manufactured by CANNA, designed to provide a natural, airy medium for seedlings, transplants and pot-grown plants. Supplied as two dry bricks in the pack, each compact brick quickly soaks up water to create a light, well-draining substrate that maintains moisture and supports root aeration. It’s free of synthetic fillers, easy to store, and suitable for gardeners looking for a renewable alternative to peat-based soils.

How do I prepare the CANNA coco brick for planting?

Preparing the brick is fast and low-effort: place the dry brick in a container, pour water over it, and allow the coir to hydrate and expand fully. Break apart any remaining compressed lumps with your hands or a trowel to get a uniform texture before filling pots or trays.

• Use warm water for quicker expansion (follow CANNA guidance for ratios).
• Allow 15–30 minutes for full hydration; remix if needed to remove clumps.
• Fluff with gloved hands or a fork to improve aeration before potting.

What are the performance benefits of using coconut coir over soil?

Coconut coir offers a balance of water retention and drainage that supports healthy root development while reducing the risk of compaction common with heavy soils. It holds moisture for longer than many inert substrates but still allows excess water to drain, creating a stable environment for feeding and root oxygenation.

• Improves root oxygen levels versus dense potting mixes.
• Buffers watering frequency—retains moisture without waterlogging.
• pH-neutral base that works well with most nutrient regimens.

Can I reuse the CANNA coco substrate, and how should I store it between seasons?

Yes — the processed coir in these bricks is durable and can be reused for multiple cropping cycles when rinsed and refreshed. After use, remove large root masses, rinse to remove salts or nutrient buildup, dry thoroughly, and store in a dry, ventilated container to prevent mold before the next use.

• Rinse with fresh water to lower accumulated salts.
• Dry completely to prevent microbial growth in storage.
• Mix with fresh coir or compost to restore structure and fertility.

How much expansion and coverage can I expect from each brick?

Each compact 8-liter dry brick expands to roughly 40 liters of loose substrate when hydrated, so a two-brick pack yields about 80 liters of usable coir. Expansion varies slightly with hydration method and compaction; fluffing after soaking ensures maximum volume and consistent texture.

• Single brick: ~8 L dry → ~40 L expanded.
• Two-brick pack: approximately 80 L of usable medium.
• Volume depends on how vigorously you break apart and fluff the material.

Who is this for: This CANNA Coco Brick is suited for hobby and professional growers who want a sustainable, peat-free growing medium that’s easy to transport and store. It fits indoor container gardens, greenhouse systems, seed starting, and hydroponic applications where consistent drainage and root aeration are priorities. Beginners will appreciate the straightforward preparation, while experienced growers can use it as a reliable base for nutrient programs and reusable substrate management.