GROW!T Coco Coir Croutons, 28 L Bag

An Organic, Ready-to-Use Alternative to Clay Pellets

Clay pellets and river rock give roots the air pockets they need to avoid waterlogging, but they're inert, heavy, and not something most growers can compost or return to the soil at the end of a cycle. GROW!T Coco Coir Croutons cover the same aeration and drainage role using an organic material instead: chunks of fresh-water-rinsed coconut husk, ready to use straight out of the bag with no soaking or buffering step required.

Their porous structure lets roots penetrate the material itself rather than just growing around it, and they hold water at a rate similar to clay pellets, so a system built around clay media doesn't need major dialing in when switching over.

Key Features & Benefits

• Fresh-water-rinsed — reduces residual salts before the croutons reach the bag, so they're ready to use without a separate rinse step.
• Ready-to-use, no soaking required — goes straight from bag to system without a pre-soak or buffering step some coco products need.
• Organic coconut husk material — offers a compostable, renewable alternative to inert clay pellets or rock for growers who want to avoid mined media.
• Porous, chunky structure — lets roots grow into the material instead of only around it, unlike smooth round clay pellets.
• Water-holding rate similar to clay pellets — makes it a comparable drop-in swap for systems already tuned around clay media.

Who Should Use Coco Coir Croutons

These croutons fit growers using hydroponic or drain-to-waste systems who currently rely on clay pellets or rock for aeration and drainage but want an organic, renewable alternative, as well as anyone building a new system around coco-based media.

About GROW!T

GROW!T is a Hydrofarm exclusive brand built around soilless growing media, offering coco coir in loose, chip, brick, and compressed-block formats alongside graded perlite and clay pebbles. Coco Coir Croutons are one of the coir formats in that lineup, sized as a chunkier alternative to loose coir or clay aggregate.

Frequently Asked Questions

How is this different from loose coco coir?

Loose coco coir is a finer, more compost-like material, while these croutons are larger husk chunks closer in size and function to clay pellets or rock. They're better suited to aeration and drainage layers than to holding moisture the way fine coir does.

Do I need to rinse or buffer them before use?

No, they're fresh-water-rinsed and sold ready to use, so there's no separate soaking or buffering step before loading them into a system. That's a meaningful time savings over some raw coco products.

Can they replace clay pellets in an existing system?

Yes, they hold water at a rate similar to clay pellets, which makes them a reasonable drop-in swap for systems already tuned around that media. Growers switching over shouldn't need major changes to their irrigation schedule.

How much does a 28 L bag cover?

A 28 L bag covers roughly one cubic foot of media, which is enough for a handful of medium containers or a single larger system, depending on your setup. Check your container volume against that figure to estimate how many bags a full system needs.

When should I choose croutons over a coco coir block or brick?

Choose croutons when the goal is aeration and drainage similar to clay pellets or rock, such as in a hydroton-style system or as a top layer. Choose a compressed coco block or brick instead when you need a moisture-retentive growing medium to plant directly into.