Jun Master Soil Black Fine – Fine-Grained 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 minerals
• Promotes: Healthy plant growth and stabilizes water parameters
• Ideal: For sensitive fish and shrimp species (e.g., Discus, Caridina)
• High porosity: Provides an optimal environment for nitrifying bacteria
• No pre-rinsing required: Extremely durable and dimensionally stable

Product Description:

Jun Master Soil Black Fine is a premium active substrate from Japan, specially designed for planted aquariums with a fine grain size (2.5–3.0 mm). It offers ideal conditions for fine foreground plants and sensitive root systems, and promotes fast, healthy growth thanks to its high content of fulvic and humic acids and essential trace elements.

Its porous structure creates the perfect habitat for beneficial bacteria and prevents oxygen deficiency in the substrate. It lowers and stabilizes pH, GH, and KH levels – ideal for species that prefer 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 wood or roots.

It is ready to use straight from the bag – no rinsing or layering required – and is extremely long-lasting and structurally stable. Also excellent when used with liquid fertilizers. Recommended for experienced aquarists.

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

Available in:

• 3L
• 8L