• RHP Certified Coco
• 30% Added Perlite
• Free UK Delivery (over £50)
• No Heavy Item Surcharge
• Exceptional Root Aeration
• Fast Drainage Performance
• Perfect for Hydroponics Systems
• Low EC & Stable pH
• Buffered & Pre-Rinsed
• Ready To Use Straight From The Bag
• Reusable Premium Substrate
• Designed For Explosive Root Growth
• Perfect Match For Plagron Cocos A&B
• 50 Litre Bag

 

Plagron Cocos Perlite 70/30 - 50L. 

There comes a moment in every grower’s life when they realise soil is, frankly, a bit chaotic.

One minute it’s too wet. The next it’s dry enough to preserve ancient Egyptian artefacts. It compacts, it suffocates roots, and occasionally it develops the structural integrity of wet porridge.

Which is why the Dutch - a people who somehow turned tiny bits of land into a horticultural empire - invented coco-based hydroponics substrates like the utterly brilliant Plagron Cocos Perlite 70/30.

And this stuff is magnificent.

Because what Plagron has done here is take premium buffered coco coir, add 30% Perlite, and create a hydroponics substrate so airy, so perfectly balanced, and so forgiving that your plants practically sigh with relief the moment their roots touch it.

This isn’t mud in a bag. This is engineered root luxury.

Plagron. The Dutch Hydroponic Masters.  

Plagron has been around since the early 1990s, quietly building a reputation for making some of the best hydroponics nutrients and substrates on the planet. They don’t shout about it. They don’t plaster racing stripes all over the packaging or invent ridiculous marketing jargon.

They simply make products that work exceptionally well.

And Plagron Cocos Perlite 70/30 is one of their finest creations.

It’s a precisely calibrated mix of 70% high-quality coconut fibre and 30% Perlite, designed specifically for growers who want the speed and control of hydroponics, but without the constant drama that often comes with aggressive deep-water systems.

In other words, it gives you hydroponic growth rates without requiring a laboratory coat and a degree in fluid dynamics.

 

The Magic Of Perlite. 

Now then. Perlite.

To the untrained eye, Perlite looks like somebody smashed up a load of tiny white polystyrene balls and tossed them into your substrate for a laugh.

But Perlite is actually expanded volcanic glass. Which sounds dramatically more exciting, because it is.

When heated to extreme temperatures, this volcanic material expands into incredibly lightweight porous particles that hold oxygen, improve drainage and prevent compaction.

And this is absolutely crucial in hydroponics growing.

Because roots, much like Formula 1 engines, perform best when they have constant airflow and perfect operating conditions. Starve them of oxygen and everything slows down. Growth becomes sluggish. Nutrient uptake weakens. Problems begin.

Add Perlite, however, and suddenly the rootzone becomes airy, fast-draining and beautifully oxygenated.

Which is exactly what Plagron Cocos Perlite 70/30 delivers.

The result is explosive root development, rapid vegetative growth and plants that behave like they’ve discovered performance-enhancing substances.

It's Plant Biology.

Most beginner growers obsess over nutrients. Bottles. Additives. Bloom boosters with names that sound like energy drinks.

But experienced hydroponics growers know the real magic happens underground.

Healthy roots equal healthy plants.

And the reason Plagron Cocos Perlite 70/30 performs so well is because the added Perlite dramatically increases oxygen availability throughout the substrate.

This matters because roots absorb nutrients through active transport processes that require oxygen. More oxygen means better nutrient uptake. Better nutrient uptake means faster growth, stronger structure and larger harvests.

It’s not marketing nonsense. It’s plant biology.

The 70/30 ratio is also spot on. Too much Perlite and the substrate dries faster than British humour in a corporate HR meeting. Too little and airflow suffers.

Plagron has balanced it beautifully.

Buffered. Washed & Ready To Go.

One of the great frustrations with cheap coco substrates is that they often arrive loaded with excess salts and unstable mineral content.

Which means before you even start growing, you’re stood there rinsing bags of substrate like some sort of deranged horticultural dishwasher.

Thankfully, Plagron has already dealt with all of that.

Plagron Cocos Perlite 70/30 is fully washed, buffered and RHP certified.

That RHP certification is important, by the way. It means the substrate meets strict horticultural quality standards for cleanliness, consistency and reliability.

The buffering process stabilises calcium and magnesium levels within the coco fibres, preventing nutrient lockout and helping maintain a stable root environment from day one.

So instead of spending your afternoon wrestling with runoff EC meters and buckets of muddy water, you simply open the bag and start planting.

Which is how gardening should be.

Hydroponics For The Masses.

This is where Plagron Cocos Perlite 70/30 becomes genuinely clever.

It behaves like a hydroponics medium, but with the forgiveness of traditional growing media.

The coco retains moisture beautifully while the Perlite ensures rapid drainage and exceptional airflow. This creates a stable rootzone that holds water and nutrients without becoming waterlogged.

So even if your feeding schedule isn’t absolutely perfect, the substrate helps smooth out small mistakes.

That’s why this mix works brilliantly in:

Hand-watered pots
Drip irrigation systems
Run-to-waste hydroponics
Recirculating hydroponics systems
Flood and drain setups

It’s versatile, stable and refreshingly difficult to mess up.

Which, frankly, is exactly what most growers need.

Stable pH. Maximum Control. 

One of the reasons experienced growers love Plagron substrates is consistency.

Plagron Cocos Perlite 70/30 arrives with a stable pH range of 6.3 to 7.7 and an extremely low EC of just 0.06–0.09 mS/cm.

In practical terms, this means you start with a clean slate.

No hidden nutrients. No unpredictable salt spikes. No mystery deficiencies caused by poor substrate preparation.

You decide exactly what goes into your plants from day one.

And when paired with Plagron Cocos A&B nutrients, the entire hydroponics system works together with the sort of harmony normally reserved for expensive German orchestras.

Everything simply behaves itself.

Faster Growth. Bigger Roots. Bigger Fruits. 

What makes Plagron Cocos Perlite 70/30 genuinely addictive is how quickly plants respond to it.

Roots spread aggressively through the airy substrate. Watering becomes easier to manage. Plants establish faster after transplanting. Growth becomes noticeably more vigorous.

You’ll often see stronger lateral branching, thicker stems and more explosive vegetative growth compared to dense traditional composts.

And because Perlite improves drainage so effectively, you reduce the risk of overwatering - which remains one of the most common ways growers accidentally murder perfectly healthy plants.

It’s hydroponics made simpler, cleaner and vastly more efficient.

Reusable. Reliable. Rediculously Good. 

Another excellent feature of Plagron Cocos Perlite 70/30 is that it can be reused.

With proper flushing and preparation between cycles, the substrate maintains its structure remarkably well. The Perlite prevents excessive compaction while the coco fibres remain stable over time.

So unlike cheap growing media that collapse into lifeless sludge after one run, this stuff keeps performing cycle after cycle.

Which makes it not only excellent for hydroponics performance, but also surprisingly economical long-term.

Hydroponics Done Properly.