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Pelemix Open Top — 100% compressed coco coir that expands into a ready-to-plant growbag, no extra pot required. Pelemix builds these specifically for crops that need extra root aeration and rapid root development, including blueberries, fruit trees, and medical cannabis. Available in three sizes to match each stage of growth: seedling/clone (4L), transplant (6.5L), and final small pots (9L).
How to use: cut slits for planting, hydrate the substrate to your crop's needs, and place plants directly into the medium.
Weed-free, free from toxic elements, and not a carrier of plant diseases. Built to hold up over multiple grow cycles — Pelemix reports some growers keep the same Open Top in service for years.
A low-mess option for home growers, nurseries, and farms doing high-volume transplanting.
- Expands on contact with water — just add and plant
- Open-top design maximizes root aeration and drainage
- Three sizes for propagation through to small final pots
- Sourced directly from Pelemix Thailand
Why Choose Pelemix Open Tops?
- Organic Material: Coir slowly composts over 6–7 years, maintaining quality.
- Efficient Drainage: Bottom fiber layer acts as a filter, preventing blockages and ensuring consistent drainage.
- Optimal Root Development: Good drainage flow ensures maximum root growth and air capacity.
- Flexible Irrigation: High drainage ability allows for frequent, short irrigation cycles without excess water retention.
Advantages of Open Tops
- Cost-Effective: Reduces labor costs for filling pots and logistics overhead.
- Convenient: No need to purchase pots; the crop grows directly in the coir.
- Easy Transportation: Compressed material allows for efficient shipping.
- Earlier Harvest: Faster fruit development leads to earlier harvests.
- High Plant Density: More plants per hectare with high drainage capacity.
- Durable: Plastic lasts up to 11 years.
Open Top 3B
Our 3B Multi-Drain Open Top System for hydroponic blueberries combines a specially formulated coco-coir blend with our innovative Pelemix Open Top bag. The top layers are Pro Crush 7030, while the bottom layer consists of pure coco fiber for excellent drainage.
Benefits:
- Achieve higher yields
- Earlier harvest due to faster fruit development.
- Maximize the number of plants per hectare
- Benefit from labor-saving solutions with straightforward installation.






