• Premium Tropic 70/30 Cocomix
• 70% Buffered Coco Coir
• 30% High-Airflow Perlite
• Free UK Delivery (over £50)
• No Heavy Item Surcharge
• Exceptional Root Oxygenation
• Massively Improved Drainage
• Stable Moisture Retention
• Pre-Washed & Buffered
• Low EC For Precision Feeding
• RHP Certified Quality
• Perfect For Hydroponic Systems
• Supports Explosive Root Growth
• pH Stabilised At 5.8
• Made In The Netherlands

 

Tropic 70/30 Cocomix. 

Most growing media ask you to compromise.

You either get excellent drainage with all the moisture retention of a forgotten biscuit…

…or fantastic water retention with the airflow characteristics of wet cement.

And this is where Tropic 70/30 Cocomix strolls into the grow room with the calm confidence of something that already knows it’s better engineered than everything around it.

Because Tropic 70/30 Cocomix is not ordinary substrate.

It’s a meticulously balanced fusion of premium washed coco coir and oxygen-rich Perlite designed specifically for growers who understand that healthy roots create outrageously healthy plants.

And frankly, it’s superb.

Tropic has essentially taken two of the best rootzone components available, combined them in precisely the right ratio, buffered the entire thing properly and created a substrate that behaves with almost suspicious competence from day one.

The 70/30 Magic Ratio. 

At the heart of Tropic 70/30 Cocomix lies a beautifully simple formula.

70% premium buffered coco.

30% Perlite.

That’s it.

No gimmicks.

No strange mystery fillers.

No shredded forestry by-products pretending to be horticulture.

Just two exceptionally effective components working together in glorious harmony.

The coco provides moisture stability, nutrient retention and excellent root support.

The Perlite creates massive oxygen pathways and aggressive drainage throughout the substrate.

Together they form an airy, breathable root environment that allows plants to develop with astonishing speed and stability.

And roots absolutely love it.

Because roots are bizarrely demanding little organisms.

They want moisture.

But not too much.

They want airflow.

But not dryness.

They want nutrients available immediately.

But also stable.

Honestly, roots are horticultural divas.

Tropic 70/30 Cocomix somehow keeps them perfectly content anyway.

Oxygen. The Thing We All Forget. 

People obsess over nutrients.

Shelves full of bottles.

Bloom boosters.

Root stimulators.

Additives with names sounding like underground energy drinks.

Yet many completely overlook the one thing roots require every second of every day.

Oxygen.

Without oxygen, root metabolism slows dramatically.

Nutrient uptake weakens.

Growth becomes sluggish.

And eventually the substrate develops the faint aroma of damp regret.

Tropic 70/30 Cocomix solves this magnificently.

The 30% Perlite ratio creates thousands upon thousands of microscopic air pockets throughout the rootzone, continuously supplying oxygen deep into the rhizosphere.

Which is the scientific term for “the underground section where all the expensive plant wizardry happens.”

This increased oxygen availability allows roots to expand rapidly while dramatically improving nutrient absorption efficiency.

In practical terms:

Faster rooting.

More vigorous growth.

Improved nutrient uptake.

Reduced root stress.

Healthier plants.

And considerably fewer horticultural disasters caused by soggy compost.

Enhanced Drainage.

Now then. Drainage. Because overwatering remains one of humanity’s most reliable gardening talents.

People simply cannot resist watering things.

Slightly dry surface? Water it.

Leaf moved slightly? Water it.

Cloud appeared overhead? Better water it again just in case.

Cheap substrates turn this behaviour into catastrophe remarkably quickly.

Dense media trap moisture around the roots, creating anaerobic conditions where pathogens thrive and root systems quietly surrender.

Tropic 70/30 Cocomix avoids this beautifully.

The Perlite dramatically improves drainage throughout the substrate, allowing excess nutrient solution to move freely through the rootzone while still maintaining ideal moisture availability inside the coco fibres.

Fresh oxygen rapidly replaces drained moisture. Roots remain active. Healthy, aggressive and wonderfully productive.

This makes Tropic 70/30 Cocomix ideal for:

Hand-watered systems.

Drip irrigation.

Run-to-waste hydroponics.

Recirculating systems.

Large container plants.

Fast-growing fruiting crops.

Long vegetative cycles.

And growers who occasionally get slightly overenthusiastic with watering cans.

Buffered For Perfection.

Cheap coco products are absolute chaos.

One bag arrives beautifully buffered.

The next arrives loaded with sodium and enough instability to trigger a small-scale horticultural panic attack.

Tropic 70/30 Cocomix avoids this nonsense entirely.

The premium coco is pre-washed and fully buffered before packaging, removing unwanted salts and stabilising the substrate properly before use.

Which means growers receive:

Low EC levels.

Stable nutrient behaviour.

Reliable moisture retention.

Predictable feeding performance.

Reduced nutrient lockout risk.

And consistency matters enormously.

Because when growers understand how a substrate behaves, they can feed more accurately, water more confidently and push plant performance dramatically further.

Tropic 70/30 Cocomix maintains a stable pH of approximately 5.8 with an EC of around 0.8 mS/cm, creating a beautifully controllable environment for precision feeding schedules.

Which experienced growers absolutely adore.

The Joy of Low EC.

One of the genuinely brilliant things about Tropic 70/30 Cocomix is the relatively low EC value.

Because unlike heavily fertilised substrates that occasionally assault young roots with the subtlety of industrial bleach, Tropic 70/30 Cocomix gives growers complete nutritional control from the very beginning.

The low starting EC allows plants to establish rapidly with minimal stress.

Young roots colonise the substrate aggressively.

Nutrient schedules can be fine-tuned precisely.

And growers remain fully in control of feeding intensity throughout the entire cultivation cycle.

This is particularly valuable for growers chasing maximum precision.

Because precision feeding inside a stable low-EC substrate often leads to faster development, cleaner nutrient uptake and significantly healthier root systems overall.

And healthy roots are everything.

Without healthy roots, the rest of the plant is essentially just decorative optimism.

Water Retention without The Swampiness.

Now here’s where Tropic 70/30 Cocomix becomes genuinely clever.

Because despite the exceptional drainage performance, the coco fibres still retain moisture remarkably effectively.

This balance is enormously important.

Too much drainage and roots dry out rapidly.

Too much moisture retention and roots suffocate.

Tropic 70/30 Cocomix sits beautifully between the two extremes.

The coco fibres hold moisture evenly throughout the substrate while the Perlite ensures airflow remains constant and unrestricted.

The result is a rootzone that stays consistently hydrated without becoming heavy or waterlogged.

Which plants absolutely adore.

Particularly fast-growing crops consuming huge amounts of water every single day.

DHP Certified Stability. 

One of the reasons professional growers trust Tropic 70/30 Cocomix so heavily is consistency.

Bag after bag after bag.

The substrate behaves predictably.

The texture remains stable.

The drainage remains reliable.

The buffering stays consistent.

And thanks to RHP-certified quality standards, growers know exactly what they’re getting every single time.

Which is reassuring.

Because cheap substrates can occasionally behave like somebody filled a bag with shredded cardboard and emotional disappointment.

Tropic 70/30 Cocomix simply performs properly.

Every time.

Lightweight. Airy. Wonderfully Civilised. 

Despite its aggressive hydroponic performance, Tropic 70/30 Cocomix is remarkably pleasant to work with.

The substrate feels light and loose without becoming unstable.

Water distributes evenly throughout the medium.

Roots spread rapidly through the airy structure.

And because the Perlite prevents compaction over time, the rootzone continues breathing properly deep into flowering and fruiting stages.

Which is enormously important in long-term cultivation cycles where dense collapsing substrates can quietly strangle root systems halfway through development.

Tropic 70/30 Cocomix simply keeps breathing.

Even under heavy feeding schedules and aggressive irrigation routines.

Tropic 70/30 Cocomix. For Serious Flavours. 

This is not decorative potting compost for keeping a tired office fern technically alive beside a photocopier.

Tropic 70/30 Cocomix is designed for growers chasing serious performance.

Massive root systems.

Aggressive vegetative growth.

Heavy fruiting crops.

Precision hydroponic feeding.

Fast nutrient uptake.

Stable irrigation cycles.

And because the substrate gives growers complete control over feeding schedules, it becomes exceptionally versatile across a huge range of cultivation styles and environments.

Pair it with quality nutrients and the results become genuinely impressive.

Roots explode through the substrate.

Growth rates accelerate dramatically.

Plants develop with startling vigour.

And the entire rootzone remains beautifully stable from start to finish.

Dutch Simplicity. Engineered Beautifully.