FibreDust grow bags pair a growing container with a fitted, compressed coconut coir block. Add water according to the manufacturer's instructions to expand the medium inside the bag before planting. Choose a 3- or 5-gallon format for your greenhouse, container, or hydroponic production system.

Choose your bag size

• 3-gallon grow bag: Listed dimensions of 8 × 7 × 8 inches. Consider this format for smaller plants and production programs using a smaller root-zone volume.
• 5-gallon grow bag: Listed dimensions of 9 × 9 × 12 inches. Offers a larger substrate volume for crops and production cycles that require it.

Match bag size to crop requirements, plant spacing, production duration, and irrigation capacity. Confirm expanded dimensions when planning benches or growing rows.

Compressed coco growing medium

Each bag includes a compressed coir block designed to expand to fill the container when hydrated. The bag-and-block format reduces the need to handle loose substrate during setup. The UV-stabilized plastic bag provides an upright container for the growing medium.

Preparation and fertigation

Place the bag in a location that can accommodate its expanded size. Add water gradually and allow the coir to hydrate fully, following product-specific instructions. Confirm drainage openings before planting and provide a suitable route for irrigation runoff.

Use a nutrient program appropriate for coco-based production, your crop, and your water quality. Monitor substrate moisture, EC, and pH, and adjust irrigation as plants develop. Hydration time and water requirements depend on the product and conditions; do not rely on a fixed expansion time.

Compare coconut coir blocks, grow bags, and slabs for other production formats.