Brightwell Aquatics BlackWater
Overview
BlackWater is a humic-substance based water conditioner designed to replicate the chemical conditions of blackwater rivers—common in forested tropical regions—which host many freshwater fish and plants. It provides humic and fulvic acids that enhance nutrient bioavailability, subtly lower pH, soften water slightly, and can help trigger spawning cues in sensitive fishes.
Key Features
Adds humic and fulvic acids to aquarium water to simulate natural blackwater biotope conditions.
Enhances the uptake of essential nutrients (iron, calcium, magnesium, molybdenum, copper, manganese, zinc, cobalt, nickel) by aquatic plants and biotope fishes.
Slightly acidifies water and can impart a transparent brown tint depending on dosage, replicating natural blackwater aesthetics.
Designed to support spawning behaviour by simulating the onset of rainy-season conditions in blackwater habitats.
Softens water through natural chelating action of humic substances.
Suitable for planted freshwater tanks, biotope blackwater setups, and certain freshwater fishes from soft-acidic habitats.
Product Specifications
Specification
Detail
Product Name
Brightwell Aquatics BlackWater
Type
Humic/fulvic acid water conditioner
Suitable For
Freshwater planted aquariums and blackwater biotope aquariums
Primary Components
Humic acid, fulvic acid plus vitamins/trace micronutrients
Effects
Softens water, lowers pH slightly, colours water tint, improves nutrient uptake
Standard Dosage
5 ml per 20 US-gallons per week (general use)
Spawning Dose Guideline
Gradually increase to 6 drops per 10 US-gallons per day over ~6 days for spawning cues
Sizes Available
125 ml, 250 ml, 500 ml, 2 L, 20 L
Warning
Chemical filtration (strong resins) may remove humic substances quickly; adjust accordingly
Brightwell Aquatics BlackWater
$5.54