Coco Coir Block Brick 5kg (Washed & Buffered)

What is Coco Coir Block made from?

It’s compressed coconut fibre—a soilless growing medium that offers excellent moisture retention and aeration. It contains very little nutrition, so your plants will need to be fed through your nutrient plan.

What does “washed & buffered” mean, and do I still need to rinse it?

Washed means salts have been reduced; buffered means it’s treated to prevent calcium/magnesium lockout. Most growers can use it straight away, but flushing and pre-charging with Cal-Mag is recommended for sensitive starts or hydro systems.

How much does one Coco Coir Block expand to?

A 4.5kg block expands to roughly 63–72L depending on grade and water used. Add ~20–30L of water gradually while fluffing. Expansion takes 15–30 minutes; warm water speeds it up.

What texture should I aim for after expansion?

You want it moist and fluffy—like a wrung-out sponge. Not dripping wet, not dry. If it feels soggy, let it drain or add aeration materials like perlite.

Can I grow directly in Coco Coir Block?

Yes. It’s ideal for hydroponics, seed starting, and propagation. For best results, mix with perlite or pumice (common ratios: 70/30 or 50/50) or blend into soil to improve structure and drainage.

Is Coco Coir Block a good substitute for peat moss?

Yes—coco is a popular peat alternative because it’s renewable, holds water well, and improves soil texture without compacting like peat can.

How should I water plants in Coco Coir Block?

Coco thrives with consistent moisture and frequent watering. In hydro/coco systems, aim for light, regular irrigations with some runoff to prevent salt buildup.

Can I reuse Coco Coir Block after a grow?

Yes, if it’s clean. Remove old roots, flush thoroughly, and recharge with nutrients before reuse. Skip reuse if there were pests, root rot, or heavy salt build-up.

How should I store Coco Coir Block?

Store unused blocks dry and off the ground. Expanded coco should be kept slightly moist, sealed, and used within a reasonable time. Earthy smell is normal—sour or rotten smell means it’s gone off.

Is Coco Coir Block safe for indoor and outdoor gardening?

Absolutely. It’s great for containers, raised beds, indoor mixes, or loosening heavy outdoor soils. You can also use it as mulch, or in mushroom cultivation with proper prep.

Does Coco Coir Block come with instructions?

The basic process is: add water, let it expand, fluff it up, and feed. For hydro or precision setups, you may want to flush, check EC, and charge it before planting.

Why does the listing say “5kg Brick” if the product is 4.5kg?

“5kg brick” is often used as a category name, but this block is specifically 4.5kg. Use the litres-per-kg expansion info for accurate planning—it’s listed clearly on the product page.

Can I pick up Coco Coir Block in-store?

Yes—local pickup is available at Bellambi, typically ready within 24 hours. You’ll see pickup options at checkout if it's available in your area.