Ultum Nature Systems Controsoil Freshwater Aqua Soil Substrate - Plant

In this review of Ultum Nature Systems Controsoil the bottom line is clear: this substrate is aimed at freshwater hobbyists who want fast plant growth and a planted aquarium that maintains slightly acidic water. The reviewer found the volcanic ash blend and extra fine granules encourage rooting and beneficial bacteria development, making it a strong choice for aquascaping and shrimp tanks. The single biggest reason to buy is the substrate's combined effect of low ammonia release and nutrient-rich granules that support rapid plant propagation without the usual heavy maintenance.

Key Features

• Designed for planted aquariums: The granule composition and sizes provide good oxygen exchange at the root zone, helping plants establish quickly and consistently.
• Optimal for fish and shrimp: Formulated to suit freshwater tropical fish and shrimp that prefer slightly acidic water, creating a more natural environment for sensitive species.
• Low ammonia release: The substrate promotes and accelerates beneficial bacteria growth, reducing the initial nitrogen spikes that can stress livestock.
• No rinsing required: The product is ready to use out of the bag and actively absorbs impurities to help clarify cloudy water in many set ups.
• pH and kH buffering: Buffers water toward a slightly acidic pH and lowers total hardness to improve nutrient availability for plants.

Who It's For

This substrate is best for aquarists focused on live plants, aquascaping, and keeping shrimp or tropical fish that do well in softer, slightly acidic water. Those building a planted tank with hardscape like Dragon Stone will appreciate the dark, natural look and how quickly plants can take root.

It may be less suitable for hobbyists who need fully neutral or hard water parameters, or for setups that demand absolute zero dust during the first few days - some users report variable water clarity while others saw crystal clear results. If you require instant, dust-free appearance without any initial cloudiness, consider a product marketed specifically for minimal particulates.

Pros & Cons

Pros

• Encourages fast plant growth and healthy root development through nutrient-rich granules.
• Supports beneficial bacteria with low ammonia release for safer cycling.
• Buffers pH and kH toward slightly acidic, aiding nutrient uptake for plants.
• No rinsing required for many users, easing initial setup.

Cons

• Water clarity and dust levels can be mixed; some tanks may see opaque black water or initial cloudiness.
• Extra fine granules may migrate in high-flow filters unless care is taken during setup.

Specifications

Product name	Controsoil Freshwater Aqua Soil Substrate
Brand	Ultum Nature Systems
Color	Black
Granule size	Extra fine
Bag weight / volume	10 Liter | 20LB
Key material	Volcanic ash based aquasoil
pH behavior	Buffers to slightly acidic (lowers kH)

Our Verdict

Ultum Nature Systems Controsoil is a strong value for planted aquarium enthusiasts who want vigorous plant growth and an environment suitable for shrimp and tropical fish that prefer softer water. It delivers nutrient-rich, low-ammonia substrate behavior and useful pH buffering; just be mindful of potential initial dust or temporary water cloudiness when setting up the tank.

Frequently Asked Questions

Do I need to rinse this substrate?
No, the product is marketed as no rinsing required, though some setups may experience initial dust and brief cloudiness.

Is it safe for shrimp and tropical fish?
Yes, it is formulated for freshwater inhabitants that prefer slightly acidic water and supports beneficial bacteria to reduce ammonia risk.

Will it lower my tank pH?
It buffers water toward a slightly acidic pH and can lower total hardness to improve plant nutrient uptake.