Fluval Stratum Volcanic Aquarium Soil
Collected from the mineral rich foothills of the famous Mont Aso Volcano in Japan.
Fluval Stratum is the ideal substrate for stimulating the growth of aquatic plants in freshwater aquariums. Plant roots easily penetrate and spread throughout the substrate, allowing plants to obtain a variety of key, readily available nutrients that will make them flourish.
The addition of FLUVAL PLANT MICRO NUTRIENTS will ensure a full complement of essential macro and micro nutrients. The substrate’s light, non-compacting, porous structure is also highly beneficial to nitrifying bacteria, which rapidly colonize the vast porous surface, providing optimal water quality for plants.
Fluval Stratum’s inherent properties will help support a neutral to slightly acidic pH, ideal for most plants.
| Specification | Details |
|---|---|
| Origin | Mont Aso Volcano foothills, Japan |
| Substrate Type | Volcanic soil |
| Best For | Freshwater aquarium plants |
| PH Range | Neutral to slightly acidic |
| Porosity | Light, non-compacting, porous |
FAQ
Can Fluval Stratum be used with both rooted and floating plants?
Fluval Stratum is best suited for rooted aquatic plants that require a stable substrate for root development. Floating plants do not benefit from this soil and are not recommended.
Is additional nutrient supplement required?
Yes, for optimal plant growth, Fluval Plant Micro Nutrients should be added to the substrate.
Does the soil affect water chemistry over time?
The soil helps maintain a neutral to slightly acidic pH and supports stable water conditions over time.



Lauren Lyman –
My aquarium plants have grown much stronger since switching to Fluval Stratum. The roots take hold easily and the water clarity has improved. I’ve noticed more vibrant green leaves on my java fern and anubias.
Elizabeth Allan –
The soil is easy to mix into the tank and doesn’t compact. My plants are thriving, especially the stem plants that were struggling before. I still need to add the micro nutrients, but it’s worth it.
William Allan –
After using Fluval Stratum for three months, my tank has a much healthier plant population. The porous structure supports good bacterial growth and keeps water quality stable.
Molly Young –
It’s a bit more expensive than other soils, but the results are noticeable. My plants have grown taller and more robust. I recommend pairing it with the plant micro nutrients.