RIOCOCO® PCM Grow Bag Slab — 18L — Compressed — 40in x 6in x 5in — Coco Chips & Natural Coir Mix

Precision Coco Coir Grow Bag Slab for Drip Hydroponic Systems, 18L

Inconsistent coco coir batches can throw off a drip irrigation schedule that took a full season to dial in, since the air-to-water ratio in the medium directly affects how often and how much a system needs to water. RIOCOCO's PCM (Precision Coir Media) line targets that consistency, engineering the same air-to-water ratio into every compressed slab.

Compressed to 18L, the slab expands with water to its full 40in x 6in x 5in size, made from a proprietary blend of coco chips and natural coir fiber sized for drip line placement.

Key Features & Benefits

• Coco chips and natural coir fiber blend — a proprietary mix engineered for a specific air-to-water ratio.
• 18L compressed slab — expands to full volume with water, sized 40in x 6in x 5in when ready to use.
• Built for drip hydroponic systems — sized and structured to work with standard drip irrigation setups.
• Precision Coir Media (PCM) engineering — batch consistency aimed at predictable irrigation behavior.

Who Should Use This

This fits commercial and serious hobbyist growers running drip hydroponic systems who need a coco slab with a predictable, consistent air-to-water ratio from batch to batch.

About RIOCOCO

RIOCOCO was founded in 2004 and sources its coco coir from Sri Lanka's coconut industry, processing coir fiber, pith, and fractions that would otherwise go to waste into growing media. The company is headquartered in the Dallas/Fort Worth area and supplies distributors across dozens of countries.

Frequently Asked Questions

How do I set up this grow bag slab

Cut the bag open along the marked line, add water gradually to let the compressed coco expand to its full 40in x 6in x 5in size, and give it time to fully hydrate before planting. Connect drip lines once the slab has expanded and settled.

When should I flush a new coco slab before planting

Flush with pH-adjusted water before first use to rinse out excess salts naturally present in coco coir, then check runoff pH and EC before introducing plants or nutrient solution. This step matters more with coco than with some other media because of its natural cation exchange.

What does PCM mean and why does it matter

PCM stands for Precision Coir Media, RIOCOCO's term for engineering a consistent air-to-water ratio into every batch rather than leaving it to natural variation in raw coir. That consistency matters most in drip systems, where irrigation timing assumes predictable drainage behavior.

Can this slab be reused for a second crop

Coco slabs can sometimes be reused after a thorough flush and inspection for root mass buildup. Structure and drainage typically degrade with reuse, though, so most drip hydroponic operations replace slabs between crops for consistent performance.