---
product_id: 634375199
title: "Blackwater Humic Fulvic Acid Supplement Simulates Natural Blackwater Conditions Supports Nutrient Uptake in Freshwater Planted Aquariums, 125 ml"
brand: "brightwell aquatics"
price: "VT4535"
currency: VUV
in_stock: true
reviews_count: 6
category: "Brightwell Aquatics"
url: https://www.desertcart.vu/products/634375199-blackwater-humic-fulvic-acid-supplement-simulates-natural-blackwater-conditions-supports
store_origin: VU
region: Vanuatu
---

# Boosts plant nutrient uptake Triggers natural fish spawning Softens and stabilizes water Blackwater Humic Fulvic Acid Supplement Simulates Natural Blackwater Conditions Supports Nutrient Uptake in Freshwater Planted Aquariums, 125 ml

**Brand:** brightwell aquatics
**Price:** VT4535
**Availability:** ✅ In Stock

## Summary

> 🌊 Elevate your aquarium’s ecosystem — where nature meets nurture!

## Quick Answers

- **What is this?** Blackwater Humic Fulvic Acid Supplement Simulates Natural Blackwater Conditions Supports Nutrient Uptake in Freshwater Planted Aquariums, 125 ml by brightwell aquatics
- **How much does it cost?** VT4535 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/634375199-blackwater-humic-fulvic-acid-supplement-simulates-natural-blackwater-conditions-supports)

## Best For

- brightwell aquatics enthusiasts

## Why This Product

- Trusted brightwell aquatics brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Proudly American-Made Quality:** Scientifically formulated and crafted in the USA for trusted, premium aquarium care.
- • **Maximize Plant Growth Efficiency:** Enhances iron, calcium, and trace element absorption for lush, vibrant aquatic plants.
- • **Encourage Breeding Like Clockwork:** Mimics rainy season cues to naturally stimulate spawning in Discus, Tetras, and more.
- • **Maintain Crystal-Clear, Stable Water:** Softens water and supports pH balance to reduce stress and boost fish vitality.
- • **Simulate Authentic Blackwater Habitats:** Recreate tropical river conditions for your aquarium’s ultimate natural vibe.

## Overview

Brightwell Aquatics Blackwater Humic Fulvic Acid Supplement is a 125 ml liquid formula designed to replicate natural blackwater river conditions. It enriches freshwater planted aquariums by enhancing nutrient bioavailability, stabilizing water parameters, and encouraging natural spawning behaviors in softwater fish species. Made in the USA, this supplement supports healthier plants and happier fish by softening water, improving coloration, and promoting overall aquatic vitality.

## Description

Brightwell Aquatics BlackWater is a premium humic substance supplement formulated to replicate the natural conditions found in blackwater river systems such as the desertcart, Rio Negro, and forested Southeast Asian streams. Rich in humic and fulvic acids, BlackWater not only darkens the water slightly to create a more natural habitat, but also enhances the bioavailability of critical nutrients for aquatic plants, like iron, calcium, magnesium, and trace elements. This helps maximize the effectiveness of plant nutrient dosing and promotes lush growth in planted aquariums. BlackWater is especially beneficial for freshwater fish and shrimp species that come from low-mineral environments, such as Discus, Tetras, and other softwater fish. By naturally softening water and creating environmental cues tied to the rainy season, it can also help stimulate breeding behavior. When used regularly, BlackWater supports stable conditions, improved coloration, reduced stress, and better overall vitality for your aquatic life. Whether you're building a blackwater biotope, maintaining a planted tank, or encouraging fish to spawn, Brightwell BlackWater is an essential part of your freshwater aquarium care routine.

Review: Acceptable tannin - Gives acceptable tannins, but ph readings were not much affected
Review: Every time I use this my fish seem happy and breed

## Features

- ENHANCES BLACKWATER CONDITIONS Provides humic and fulvic acids to simulate natural blackwater rivers found in tropical freshwater environments.
- SUPPORTS PLANT NUTRIENT ABSORPTION Increases nutrient bioavailability for plants by improving uptake of iron, calcium, and trace elements.
- ENCOURAGES NATURAL SPAWNING BEHAVIOR Mimics rainy season cues to promote spawning in species like Discus and Cardinal Tetras.
- MAINTAINS STABLE AQUARIUM PARAMETERS Helps naturally soften water, support pH stability, and enhance overall water quality and appearance.
- AMERICAN-MADE EXCELLENCE – Brightwell Aquatics is an industry-leading brand committed to providing innovative and scientifically backed aquatic care products. Made in the USA, we consistently deliver advanced superior quality solutions to elevate the vibrancy and health of your aquarium.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07QSYT7MR |
| Allergen Information | Sulphites Free |
| Best Sellers Rank | #61,439 in Pet Supplies ( See Top 100 in Pet Supplies ) #6,205 in Fish & Aquatic Pets |
| Color | Clear |
| Customer Reviews | 4.4 4.4 out of 5 stars (244) |
| Date First Available | 12 November 2019 |
| Item Form | Liquid |
| Item Weight | 151 g |
| Item model number | BWR125 |
| Pet Life Stage | All Life Stages |
| Product Dimensions | 13.5 x 5 x 5 cm; 151 g |
| Quantity | 1 |
| Size | 125-ml |
| Specific Uses | Coat |
| Volume | 125 |
| batteries required | No |

## Product Details

- **Brand:** Brightwell Aquatics
- **Item form:** Liquid
- **Liquid volume:** 125 Milliliters
- **Manufacturer:** Brightwell Aquatics
- **UPC:** 810086011728

## Images

![Blackwater Humic Fulvic Acid Supplement Simulates Natural Blackwater Conditions Supports Nutrient Uptake in Freshwater Planted Aquariums, 125 ml - Image 1](https://m.media-amazon.com/images/I/71qQL6CMvWL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐ Acceptable tannin
*by B***S on 10 December 2025*

Gives acceptable tannins, but ph readings were not much affected

### ⭐⭐⭐⭐⭐ Review
*by K***Y on 14 December 2023*

Every time I use this my fish seem happy and breed

### ⭐⭐⭐⭐⭐ Review
*by T***T on 13 January 2026*

A superb product that creates a blackwater biotope.......keeps fish healthy and free from bacterial infections.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.vu/products/634375199-blackwater-humic-fulvic-acid-supplement-simulates-natural-blackwater-conditions-supports](https://www.desertcart.vu/products/634375199-blackwater-humic-fulvic-acid-supplement-simulates-natural-blackwater-conditions-supports)

---

*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-12*