Plagron Hydros Coco 60/40 45L — Premium Clay Pebbles & Coco Mix for Hydroponic Systems
Best for: Growers running flood and drain or drip systems who want the drainage of clay with the buffering of coco, without paying premium prices
Our thoughts
This is the kind of substrate commercial growers rely on, and for good reason. The 60/40 ratio hits that sweet spot where you get rapid root development without overcomplicating things. Plagron's heavy buffering means fewer surprises with calcium and magnesium lockout. One we'd recommend if you're serious about yield without guessing.
Plagron Hydros Coco 60/40 is a ready-to-use hydroponic growing medium blending 60% expanded clay pebbles with 40% premium coconut fibre in a 45-litre bag. It's designed for growers who want the best of both worlds: the drainage and oxygenation of clay combined with the water retention and nutrient buffering of coco. No reconstitution needed — open the bag and start planting.
How it compares
This sits in the professional-grade blended substrate category, competing directly with Gold Label 60/40 and CANNA Coco Pebble Mix.
- Double-buffered coco portion outperforms standard coco blends in calcium and magnesium stability
- Ready-to-use formulation (no brick crushing or hydration delays)
- Reusable, which saves money on larger setups and ticks the sustainability box
- Proven track record in commercial horticulture across Europe
You're paying for a substrate that's already done the chemistry for you. That's worth it.
Usage guidance
Flood and drain systems
This is where Hydros Coco 60/40 shines. The clay pebbles maximise drainage and oxygenation, while the coco holds enough moisture to buffer between flood cycles. Run it hard without waterlogging risk.
Drip irrigation and NFT
Works cleanly in both. The clay content keeps roots well-oxygenated even under continuous feed. Start nutrient solution immediately — no flushing required.
Pot growing
Use in containers with drainage holes. Water to light runoff. The blend dries slightly slower than pure clay, so you don't need to feed as often.
Bottom-fed systems (Autopot, Easy Feed)
Excellent choice. The coco portion wicks moisture upward while clay prevents compaction and root rot.
Feeding from day one
This substrate is buffered and ready. Begin nutrient feeding immediately after planting or transplanting — no lag time.
Technical specifications
- Volume: 45 litres
- Composition: 60% Euro Pebbles (expanded clay), 40% Coco Premium (coconut fibre)
- pH Range: 6.0–7.0 (at 1:1.5 water ratio)
- EC Value: 0.2–0.9 mS/cm (at 1:1.5 water ratio)
- Buffering: Double-buffered coco, salt-flushed multiple times
- Reusable: Yes, can be sanitised and reused across cycles
- Ready-to-use: Requires no reconstitution or preparation
Who this is for
- Growers running recirculating hydroponic systems (flood and drain, drip)
- Anyone wanting stronger root development without pure coco's oxygenation compromises
- Experienced growers scaling up from smaller setups
- Sustainable-minded growers who value reusable media
- Those who want a buffered substrate that doesn't require pH babysitting
Our take
Plagron Hydros Coco 60/40 is a proper commercial-standard substrate at sensible money. The buffering is solid, the drainage is reliable, and the clay-coco ratio produces measurably faster root development than either medium alone. It's the kind of thing that pays for itself in saved nutrients and faster cycles.
If you're building or upgrading a hydroponic system and want to run without surprises, worth picking up while stock lasts. Does exactly what professional growers need it to do.
