Fluval Stratum — Nutrient-Rich, pH-Balanced Rooting Substrate
The go-to rooting medium for houseplants, propagations, and tissue culture plantlets
Originally developed for aquatic plants, Fluval Stratum has become a proven favorite among aroid growers for one reason:
it creates the perfect environment for roots to take off.
Sourced from mineral-rich volcanic soil, this substrate delivers the ideal balance of aeration, moisture, and nutrients—everything young roots need to establish fast and grow strong.
Why It Works
Encourages Explosive Root Growth
Lightweight, porous structure allows roots to penetrate easily and expand quickly
pH-Balanced for Aroids (5.5–6.5)
Supports optimal nutrient uptake and stable root-zone conditions
Nutrient-Rich Volcanic Soil
Naturally contains essential minerals like iron, potassium, and magnesium
Supports Beneficial Microbes
Creates a healthy root environment that promotes long-term plant vitality
Perfect Moisture Balance
Retains hydration without becoming soggy—reducing risk of rot
Ideal Granule Size (3–5mm)
Provides excellent aeration + drainage for developing root systems
Perfect For
• Propagating cuttings
• Rooting Alocasia corms
• Acclimating tissue culture plantlets
• Restarting stressed or imported plants
• Early-stage root development for aroids & tropicals
How to Use
• Use as a standalone rooting medium for propagations
• Keep evenly moist (not soaked)
• Once roots are established, transition into your preferred mix
The Bottom Line
If your goal is faster rooting, stronger starts, and healthier plants,
this is one of the most effective substrates you can use.