UNS Controsoil

UNS Controsoil

UNS Controsoil is a high-performance substrate crafted from natural soil and volcanic ash, specifically designed to support lush aquatic plant growth and maintain stable water parameters. Unlike nutrient-heavy soils, UNS Controsoil focuses on creating a balanced ecosystem with low ammonia release and buffering that gently lowers pH and KH to slightly acidic conditions—ideal for plants, freshwater fish, and shrimp alike.

This substrate requires no rinsing before use, thanks to its impurity-absorbing properties that help prevent cloudy startup water. Available in multiple sizes (fine ~3 mm, normal ~5 mm), UNS Controsoil accommodates tanks from nano to large scale with options tailored for different root depths and plant types.

For aquascapers, UNS Controsoil offers more than just aesthetics: in controlled testing it helped stabilize pH around 6.8 and allowed for faster cycling by releasing minimal ammonia—supporting quicker establishment of the biological filter.

Key Benefits:

• No Rinsing Required – Inhibits cloudy water by actively absorbing impuritie
• Low Ammonia Release – Promotes and accelerates beneficial bacteria growth
• pH & kH buffering – Buffers water to slightly acidic pH and lowers total water hardness for better aquatic plant nutrient consumption environment
• Optimal For Fish And Shrimp – Suitable for all fresh water inhabitants such as tropical fish and shrimp that prefer slightly acidic aquarium water
• Designed For Planted Aquariums – Granule composition and sizes provide optimal oxygen exchange for aquatic plants

Usage Recommendations:
Use the substrate in a depth suited to your tank’s design (depending on plant root types). Carefully pour water over a dish or other diffuser when filling to avoid disturbing the substrate layer. Use UNS Controsoil in conjunction with high-quality plant fertilisers for best results.

Ideal Applications:
Perfect for planted freshwater tanks, shrimp-focused setups, and aquascapes where a clean black or brown substrate enhances contrast and plant brightness. Also suitable for aquarists seeking soft, slightly acidic water parameters without heavy nutrient overload.

View our other Active Substrates here.

McMerwe’s comments: Unlike nutrient-saturated soils that can cause ammonia spikes, UNS Controsoil gently buffers pH and KH to slightly acidic levels, perfect for healthy plant growth, freshwater fish, and shrimp. [Rating: 5/5]