Jun Master Soil Black Fine – Fine-Grain Premium Substrate for Planted Aquariums

Key Features:

• Fine Grain: (2.5–3.0 mm) ideal for delicate planting and strong root development
• Rich in: Fulvic and humic acids as well as essential minerals
• Promotes: Healthy plant growth and regulates water parameters
• Ideal for: Sensitive fish species and shrimp (e.g. Discus, Caridina)
• High Porosity: Optimal environment for nitrifying bacteria
• No Pre-Washing Required: Highly durable and dimensionally stable

Product Description:

Jun Master Soil Black Fine is a high-quality active substrate from Japan, specially developed for planted aquariums with a fine grain size (2.5–3.0 mm). It creates ideal conditions for delicate foreground plants and sensitive root systems, promoting fast, healthy growth thanks to its high content of fulvic and humic acids and essential trace elements. Its porous structure supports beneficial bacteria and prevents oxygen deficiency in the substrate. It reliably lowers and stabilizes pH, GH, and KH levels – ideal for species that thrive in soft, slightly acidic water, such as Discus, Angelfish, or Caridina shrimp. Master Soil Black Fine improves water quality, effectively clarifies the water, and prevents discoloration from roots. It is ready to use right out of the bag – no rinsing or layering required – and stands out for its longevity and structural integrity. Also ideal for use in combination with liquid fertilizers. Suitable for experienced aquarists.

Please note: Jun Master Soil Next significantly lowers KH levels. The pH level may also drop well below 6.5.

Available in:

• 3L
• 8L