Fluval Bio Stratum, porous volcanic corm propagation substrate infused with nitrifying bacteria

Grow Essentials

FLUVAL BIO STRATUM

£12.99

Dispatch: Mon to Thu
Available: –
Delivery: Free over £75

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Free UK delivery on orders over £75
Packed plastic-free
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What customers say

★★★★★

Absolutely love these corm pot racks! Keeps all my growing corms and pups nice and organised.

Lisa CCorm Keeper rack

★★★★★

An amazing company

John J

★★★★★

I absolutely love these corm cups, well made and look great. These corm cups are great for airflow, and love that I can put a tall cup on top to keep humidity

Lisa CCorm Crown

★★★★★

Quick dispatch great item and very well packaged

Phillip

★★★★★

Super fast dispatch, plants always arrive happy and healthy. These Alocasias are by far the best around, highly variegated and a great size for the price.
Russ is extremely knowledgeable and always happy to give advice.
I have personally ordered many Alocasias and accessories from Russ and I’m over the moon with them.
The Alocasia Company is my go to for rare and beautiful Alocasia’s.
Thank you Russ 🩷💚

Lisa C

★★★★★

Such a great kit

Peter HCorm Starter Kit

★★★★★

Fantastic product.
Well packaged & rapid delivery.
Thank you.

Stewart JCorm Starter Kit

★★★★★

These are great kits, everything you need to grow your corms.

Peter HCorm Starter Kit

★★★★★

Absolutely amazing service
10/10
Highly reccomended

Mario V

★★★★★

Absolutely love these corm pot racks! Keeps all my growing corms and pups nice and organised.

Lisa CCorm Keeper rack

★★★★★

An amazing company

John J

★★★★★

I absolutely love these corm cups, well made and look great. These corm cups are great for airflow, and love that I can put a tall cup on top to keep humidity

Lisa CCorm Crown

★★★★★

Quick dispatch great item and very well packaged

Phillip

★★★★★

Super fast dispatch, plants always arrive happy and healthy. These Alocasias are by far the best around, highly variegated and a great size for the price.
Russ is extremely knowledgeable and always happy to give advice.
I have personally ordered many Alocasias and accessories from Russ and I’m over the moon with them.
The Alocasia Company is my go to for rare and beautiful Alocasia’s.
Thank you Russ 🩷💚

Lisa C

★★★★★

Such a great kit

Peter HCorm Starter Kit

★★★★★

Fantastic product.
Well packaged & rapid delivery.
Thank you.

Stewart JCorm Starter Kit

★★★★★

These are great kits, everything you need to grow your corms.

Peter HCorm Starter Kit

★★★★★

Absolutely amazing service
10/10
Highly reccomended

Mario V

How to use

Use as a propagation substrate for Alocasia corms.
For step-by-step instructions, see our guide: A Beginner's Guide to Propagating Alocasia Corms in Fluval Stratum.

What's inside

Fluval Bio Stratum: natural volcanic soil from Mount Aso, Japan, infused with beneficial nitrifying bacteria.

More about it

Natural volcanic soil from Mount Aso, Japan
Infused with beneficial nitrifying bacteria
Lightweight, porous structure
Slightly acidic pH
Originally formulated for aquascaping
Available in 2kg and 8kg

Delivery and returns

Orders are dispatched Monday to Thursday. Free UK delivery on orders over £75.

If anything arrives damaged, email sales@thealocasiacompany.co.uk within 7 days with your order number and a photo.

About this product

FLUVAL BIO STRATUM

Originally formulated for aquascaping, Fluval Stratum, crafted from natural volcanic soil from Japan’s Mount Aso, has gained popularity among aroid growers for its unique ability to support healthy root development in delicate plants. This guide explores how its lightweight, porous structure and slightly acidic pH create an ideal environment for successfully propagating Alocasia corms.

Bio Stratum is infused with beneficial nitrifying bacteria

A detailed, step-by-step instructions, in this blog post:

A Beginner’s Guide to Propagating Alocasia Corms in Fluval Stratum

Teaches you how to leverage Fluval Stratum’s natural moisture regulation and aeration to reduce rot risk and stimulate robust sprouting. From preparing your propagation setup to tracking root and leaf development, it offers practical techniques, a supply checklist, and troubleshooting solutions for every stage of growth.

For hobbyists and collectors alike, this guide explains Alocasia corm propagation and shows how a substrate designed for aquariums can be adapted to a plant propagation setup.