Professional Coco by Green Planet

Professional Coco by Green Planet — Cal-Mag Buffered RHP Coco Coir, 53L

GP-SUB-COCO-53L

$34.95
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Pairs well with

Green Planet Professional Coco is 100% coco coir in a 53L bag — no perlite, just clean, washed coconut fibre that holds moisture and feeds air to the root zone. It's pre-buffered with calcium and magnesium, so the medium isn't fighting your feed for cal-mag from day one, and it's RHP certified and washed for low salt and no pests. Open the bag, fluff it up, and plant.

Cal-Mag Pre-Buffered Buffered with calcium and magnesium to neutralise excess salts, so cal-mag uptake is stable from the first feed.
RHP Certified & Washed A third-party quality mark for water absorption, air, pH and purity — washed, low salt and pest-free.
High Water Retention As 100% coco it holds moisture longer than a coco-perlite blend, giving you a more forgiving watering window.
Ready to Use No soaking or charging — open the bag, fluff it up to break compaction, and pot straight into it.

Specifications

Type: 100% coco coir substrate
Buffering: Pre-buffered with calcium & magnesium
Volume: 53L bag
Certification: RHP certified (028DS15), EN 12580 compliant
pH: Balanced and ready to use
Salt content: Low — washed
Best for: Propagation, hydro, containers, custom blends
Storage: Cool, dark, above 4°C
The Grow Guys Tip
  • Being 100% coco, this holds more water than a blend. If you want faster drainage, cut it with 20-30% perlite, or grab the ready-made Coco 70/30.
  • It's cal-mag buffered, but keeping a light cal-mag additive in the feed is still cheap insurance in coco.
  • Fluff the coco out of the bag before potting to break up any compaction and open up the air pockets.

How to Use

1
Open the bag and fluff the coco to break up any compaction from packing.
2
Fill your pots or trays straight from the bag — no pre-soak or buffering needed.
3
Plant and water in, then feed with a coco-suitable nutrient program.
4
Store any unused coco in a cool, dark spot above 4°C to keep it fresh.

Pairs Well With

FAQ

Is this straight coco, or does it have perlite in it?

This is 100% coco coir with no perlite. If you want a faster-draining medium out of the bag, look at the Coco 70/30 Perlite blend instead.

Do I need to buffer or soak it before planting?

No. It's pre-buffered with cal-mag, washed and pH-balanced, so it's ready to use straight from the bag — just fluff it up first.

Do I still need to run cal-mag?

Yes, it's still worth it. The coco comes cal-mag buffered, but a light cal-mag additive through your feeds is good insurance against deficiencies as the plant draws down.

Can I add my own perlite?

Yes. Cut it with around 20-30% perlite if you want more aeration and faster drainage, or use it straight for a more moisture-retentive medium.

How should I store an open bag?

Keep it cool, dark and above 4°C, and reseal or cover the bag so it doesn't dry out.

Clean coco, ready to plant

100% RHP-certified, cal-mag buffered coco coir in a 53L bag. Free shipping over $499*

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We built The Grow Guys from the soil up — well, coco and perlite. Before we sold gear, we bought it, ran it, and learned the hard way what's worth the money and what ends up in the shed. That's the filter everything on our shelves passes through. No sales scripts, no rebadged junk, no telling you what you want to hear. Just gear we'd run ourselves and advice from people who actually grow. Chasing higher yields, tighter flowers, or your first harvest? You're in the right place.

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FAQs

Order by 2pm and it ships the same business day from Invermay, Tasmania.

Calculated at checkout by weight and destination. Free shipping over $499*.

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30-day change-of-mind returns on unopened, unused products. A 10% restocking fee applies and return shipping is at your cost.

Call, email, or walk into the Invermay shop. You'll get a grower on the other end, not a script.

Unit 10/110 Gleadow Street, Invermay 7248. Mon–Fri 8:30am–5:30pm, Sat 9am–3pm.

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