Brightwell BlackWater 250ml Provides Humic Substances for Planted & Blackwater Biotope Aquaria

Brightwell BlackWater simulates the natural water conditions of blackwater rivers, home to many aquarium fishes and plants. It provides humic substances (humic and fulvic acids), which enhance nutrient availability to plants by increasing uptake of key minerals like iron, calcium, magnesium, and trace elements. This product also gently acidifies and softens water, encouraging natural fish behaviors such as spawning, especially for species like Discus and Cardinal Tetras. It is formulated based on extensive research of aquatic plant nutrients and riverine water chemistry.

Key Features:

Blackwater Simulation: Creates water conditions similar to natural blackwater rivers
Humic Substances: Provides humic and fulvic acids to increase nutrient bioavailability for plants
Spawning Aid: Helps simulate rainy season conditions to encourage fish spawning
Water Softening: Chelates minerals, gently acidifying and softening water
Research-Based Formulation: Developed with extensive study of aquatic plants and blackwater environments

How to Use:
Add 5 ml (1 capful) per 20 US gallons (75.7 L) weekly, or dose daily with 6 drops per 20 gallons for more stable nutrient levels.
For spawning, gradually increase dosage over 6 days to 6 drops per 10 gallons daily, maintaining until spawning completes.
Add directly to water changes for maximum effect.
Avoid use with chemical filtration media that remove organic compounds (e.g., macroporous resins).

Ideal For:
Planted aquarium owners seeking improved nutrient uptake and natural blackwater conditions
Aquarists aiming to encourage spawning of blackwater fish species like Discus and Cardinal Tetras