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Fluval Stratum Planted Aquarium Substrate
Volcanic aquasoil for thriving planted tanks
- Made from mineral-rich volcanic soil for root nourishment
- Lightweight porous granules that promote beneficial bacteria
- Gently buffers water toward a slightly acidic pH
- Encourages strong root development in stem and rooted plants
- Ideal base layer for shrimp and planted aquascapes
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Pros
- Nutrient-rich volcanic soil fuels demanding plants
- Buffers toward acidic pH favored by shrimp and many plants
- Porous structure supports healthy beneficial bacteria
- Promotes vigorous, well-anchored root growth
- Natural dark tone makes plant and fish colors pop
Cons
- Can cloud the water initially and needs gentle rinsing
- Soft granules may compact or break down over time
- Buffering capacity diminishes after a long period
- Lightweight grains can stir up when uprooting plants
At a glance
Volcanic aquasoil for thriving planted tanks
Fluval Stratum is a proven volcanic aquasoil that feeds roots and nudges pH into the slightly acidic range plants and shrimp love.
- Made from mineral-rich volcanic soil for root nourishment
- Lightweight porous granules that promote beneficial bacteria
- Gently buffers water toward a slightly acidic pH
- Encourages strong root development in stem and rooted plants
- Ideal base layer for shrimp and planted aquascapes
Product Specifications
- Type
- Volcanic aquasoil
- pH effect
- Buffers slightly acidic
- Best for
- Planted and shrimp tanks
- Texture
- Porous granules
- Color
- Natural dark
- Root support
- High
Why we recommend the Fluval Stratum Planted Aquarium Substrate
Stratum is the kind of substrate that quietly does a lot of work. Made from mineral-rich volcanic soil, it gives rooted and stem plants a nutrient bank to draw from, encouraging the strong root development that separates a thriving planted tank from a struggling one. Its porous granules also host beneficial bacteria, supporting the biological filtration every aquarium depends on.
It does more than feed plants. Stratum gently buffers water toward a slightly acidic pH, which happens to be exactly the range that dwarf shrimp and a great many aquarium plants prefer. That makes it a natural choice for shrimp scapes and softwater planted setups, where the right chemistry is half the battle. The dark, natural color is a bonus, deepening the contrast that makes greens and fish colors stand out.
Who it’s for
This substrate is aimed at hobbyists building a planted tank or a shrimp colony who want an active soil rather than inert gravel. Expect some initial cloudiness, so rinse gently and be patient as the water clears over the first day or two. Like all aquasoils, its buffering eventually wears down and the soft granules can compact with time, so it’s best viewed as a high-performance base for a defined scape rather than a forever-permanent layer. For lush growth and happy shrimp, it earns its place.
The Bottom Line
Fluval Stratum is a proven volcanic aquasoil that feeds roots and nudges pH into the slightly acidic range plants and shrimp love. It clouds a bit at first and softens over the long haul, but as a planted-tank base it delivers lush, well-rooted growth.
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Frequently Asked Questions
Does Fluval Stratum lower pH?
Yes. It buffers water toward a slightly acidic pH, which suits dwarf shrimp and many softwater plants.
Why is my water cloudy after adding it?
Fine particles cause temporary cloudiness. Rinse gently before use and the water typically clears within a day or two.
Do I need to add fertilizer with it?
It provides root nutrients out of the gate, but heavy root feeders benefit from root tabs as the substrate ages and depletes.
Is it good for a shrimp tank?
Very. The acidic buffering and porous, bacteria-friendly structure make it a popular base for shrimp colonies.
How long does it last?
It performs well for a long stretch, but its buffering fades over time and the soft grains can compact, so it's best for a defined scape rather than permanent use.