---
product_id: 201406281
title: "Brightwell Aquatics MicroBacter7 Complete Bioculture for Fish Tank or Aquarium - Populates Biological Filter Media for Saltwater and Freshwater Fish - Aquarium Water Treatments, 135.25 fl oz"
brand: "brightwell aquatics"
price: "HK$1763"
currency: HKD
in_stock: true
reviews_count: 8
category: "Brightwell Aquatics"
url: https://www.desertcart.hk/products/201406281-brightwell-aquatics-microbacter7-complete-bioculture-for-fish-tank-or-aquarium
store_origin: HK
region: Hong Kong
---

# 135.25 fl oz liquid volume 7+ aerobic & anaerobic microbes Made in USA, premium quality Brightwell Aquatics MicroBacter7 Complete Bioculture for Fish Tank or Aquarium - Populates Biological Filter Media for Saltwater and Freshwater Fish - Aquarium Water Treatments, 135.25 fl oz

**Brand:** brightwell aquatics
**Price:** HK$1763
**Availability:** ✅ In Stock

## Summary

> 🧪 Elevate your aquarium’s ecosystem with science-backed microbial magic!

## Quick Answers

- **What is this?** Brightwell Aquatics MicroBacter7 Complete Bioculture for Fish Tank or Aquarium - Populates Biological Filter Media for Saltwater and Freshwater Fish - Aquarium Water Treatments, 135.25 fl oz by brightwell aquatics
- **How much does it cost?** HK$1763 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/201406281-brightwell-aquatics-microbacter7-complete-bioculture-for-fish-tank-or-aquarium)

## 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

- • **Nutrient Ninja:** Accelerates nitrification & denitrification, slashing harmful nitrates and phosphates fast.
- • **Microbial Mastery:** Advanced blend of aerobic & anaerobic bacteria for superior filtration and water clarity.
- • **Dual Ecosystem Power:** Perfectly formulated for both saltwater and freshwater aquariums—versatility meets performance.
- • **Cleaner, Clearer, Healthier:** Rapidly reduces ammonia, nitrite, nitrate, and hydrogen sulfide for a thriving aquatic habitat.
- • **Trusted American Innovation:** Scientifically backed, veterinarian recommended, and proudly made in the USA for unmatched reliability.

## Overview

Brightwell Aquatics MicroBacter7 is a 135.25 fl oz advanced microbial bioculture designed to optimize biological filtration in both freshwater and saltwater aquariums. Featuring a complex system of aerobic and anaerobic bacteria plus natural enzymes, it accelerates nutrient cycling by enhancing nitrification and denitrification processes, effectively reducing harmful compounds like ammonia, nitrite, nitrate, phosphate, and hydrogen sulfide. Made in the USA and veterinarian recommended, this liquid treatment promotes crystal-clear water and a healthier aquatic environment, ideal for established tanks seeking stable, pristine conditions.

## Description

Brightwell Aquatics MicroBacter7 Complete Bioculture for Fish Tank or Aquarium Experience a new level of aquatic care with Brightwell Aquatics MicroBacter7 Complete Bioculture for Fish Tank or Aquarium – the ultimate solution for achieving a balanced and thriving aquatic environment. This advanced microbial formula is rigorously tested and recommended by veterinarian pathologists, establishes biological filtration in new aquarium setups and accelerates the rates of nitrification, denitrification, and organic waste degradation in marine and freshwater aquaria. The bacteria supplement offers unparalleled reliability. While rapidly reducing hydrogen sulfide production to increase dissolved oxygen levels, it also decreases levels of organic carbon, ammonia, nitrite, nitrate, and phosphate, establishing a cleaner substrate. As a result, it inhibits the growth of undesirables and improves the overall water clarity of your aquarium. If you're setting up a new aquarium or fish tank, the MicroBacter7 Bacteria Water Conditioner is your go to solution. Its versatility extends to both freshwater and saltwater aquariums, providing powerful support for a diverse range of aquatic environments. FEATURES AT A GLANCE Advanced Microbial Formula Comprehensive Nutrient Remineralization Targeted Nutrient Reduction Enhanced Water Quality Prevents Growth of undesirable substances Reduced Hydrogen Sulfide Production Veterinarian Pathologist Tested and Recommended AMERICAN-MADE EXCELLENCE Trust in the quality and excellence of Brightwell Aquatics, an industry-leading brand committed to providing innovative and scientifically backed aquatic care products. Made in the USA, we consistently strive to deliver advanced superior quality solutions to elevate the vibrancy and health of your aquarium.

Review: Good product - This is helpful for keeping water clean and fish healthy.
Review: Works as intended - 0 nitrates - This stuff works as intended. I will be honest, I thought this was a type of bacteria to boost bacteria biodiversity, and technically it is but it is mostly an enzyme to tackle nitrates in your tank. Ever since I've dosed this my tank has stayed at 0-.1 nitrates which can be good at times. But some nitrate can help foster coral growth. And ever since I've dosed this, my corals haven't grown as fast as they used to. So I would say this product is great for when your tank has been established and you want to "freeze" your tanks growth. But for new tanks I would stay away for awhile and instead buy brightwell clean which has the bacteria to broaden your bacteria biodiversity. The enzymes in this product eat at the nitrates and turn it into nitrogen gas which completely eliminates nitrates so if you want some nitrates, use this product with caution. But if i had done my research and used this product as intended, it did exactly what it was meant for.

## Features

- ADVANCED MICROBIAL FORMULA – MicroBacter7 Complete Bioculture features a complex system of non-pathogenic aerobic and anaerobic microbes, along with natural enzymes. This unique bacteria water conditioner formulation is specifically designed as an aquarium water clarifier and filtration system
- NUTRIENT REMINERALIZATION – The MicroBacter7 formula introduces aquarium bacteria to enhance nitrification, denitrification, and organic waste degradation in both marine and freshwater aquaria and limits the availability of pre-existing phosphate
- ENHANCED WATER QUALITY – The bacteria supplement promotes a clean and healthy environment by rapidly reducing concentrations of organic carbon, ammonia, nitrite, nitrate, phosphate and hydrogen sulfide production in all marine and freshwater ecosystems, leading to improved water quality
- DIRECTIONS – Shake well before use. Mix MicroBacter7 with 250 ml of aquarium water in a clean container before adding it to the aquarium. If using a pipette below water level, clean it thoroughly with fresh water before placing it back into the MicroBacter7 bottle to prevent issues
- 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 |
|---------------|-------|
| Brand | Brightwell Aquatics |
| Customer Reviews | 4.7 out of 5 stars 3,412 Reviews |
| Item Form | Liquid |
| Item Weight | 7.65 Pounds |
| Liquid Volume | 4 Liters |
| Manufacturer | Brightwell Aquatics |
| UPC | 810086017782 |

## Product Details

- **Brand:** Brightwell Aquatics
- **Item Form:** Liquid
- **Item Weight:** 7.7 Pounds
- **Liquid Volume:** 4 Liters
- **Manufacturer:** Brightwell Aquatics

## Images

![Brightwell Aquatics MicroBacter7 Complete Bioculture for Fish Tank or Aquarium - Populates Biological Filter Media for Saltwater and Freshwater Fish - Aquarium Water Treatments, 135.25 fl oz - Image 1](https://m.media-amazon.com/images/I/616HpgJ+oYL.jpg)
![Brightwell Aquatics MicroBacter7 Complete Bioculture for Fish Tank or Aquarium - Populates Biological Filter Media for Saltwater and Freshwater Fish - Aquarium Water Treatments, 135.25 fl oz - Image 2](https://m.media-amazon.com/images/I/91sBkPnabAL.jpg)
![Brightwell Aquatics MicroBacter7 Complete Bioculture for Fish Tank or Aquarium - Populates Biological Filter Media for Saltwater and Freshwater Fish - Aquarium Water Treatments, 135.25 fl oz - Image 3](https://m.media-amazon.com/images/I/8144UrDSnuL.jpg)
![Brightwell Aquatics MicroBacter7 Complete Bioculture for Fish Tank or Aquarium - Populates Biological Filter Media for Saltwater and Freshwater Fish - Aquarium Water Treatments, 135.25 fl oz - Image 4](https://m.media-amazon.com/images/I/71wfT8SjYbL.jpg)
![Brightwell Aquatics MicroBacter7 Complete Bioculture for Fish Tank or Aquarium - Populates Biological Filter Media for Saltwater and Freshwater Fish - Aquarium Water Treatments, 135.25 fl oz - Image 5](https://m.media-amazon.com/images/I/81c+L2j-tqL.jpg)

## Available Options

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

## Questions & Answers

**Q: Can we add this to an existing reef with slightly elevated ammonia?**
A: If by existing you mean live stock in it? Yes, and if you mean no stock but ammonia, yes again.  You might be better off doing a water change if you have life in tank though. If you dose this you will have to monitor nitrite and nitrate cycles.

**Q: Im new...will this kill off my invert food sources or hurt them in any way?**
A: It will not kill your invert food source. It’s bacteria that’s beneficial to your aquarium

**Q: Noob question how much of this do I use on a 32 gallon biocube? It’s a new tank I can’t find any measuring cups for ML anywhere n my town**
A: Once your tank has been fed regularly for a few days either with out without fish to start the bacterial cycle, add half during the first week and the other half during the 2nd.

Add a small amount after water changes is also a good idea for upkeep. Buy 2 bottles.

**Q: how long did it take for this product to bring down nitrite levels?**
A: I wouldn't use this product as a means of nitrite reduction. Live rock will do a much better job of that. I use this product as a means of adding biodiversity to my tank. It did nothing for nitrate levels.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product
*by K***E on March 1, 2026*

This is helpful for keeping water clean and fish healthy.

### ⭐⭐⭐⭐⭐ Works as intended - 0 nitrates
*by T***R on January 3, 2026*

This stuff works as intended. I will be honest, I thought this was a type of bacteria to boost bacteria biodiversity, and technically it is but it is mostly an enzyme to tackle nitrates in your tank. Ever since I've dosed this my tank has stayed at 0-.1 nitrates which can be good at times. But some nitrate can help foster coral growth. And ever since I've dosed this, my corals haven't grown as fast as they used to. So I would say this product is great for when your tank has been established and you want to "freeze" your tanks growth. But for new tanks I would stay away for awhile and instead buy brightwell clean which has the bacteria to broaden your bacteria biodiversity. The enzymes in this product eat at the nitrates and turn it into nitrogen gas which completely eliminates nitrates so if you want some nitrates, use this product with caution. But if i had done my research and used this product as intended, it did exactly what it was meant for.

### ⭐⭐⭐⭐⭐ It’s a great product
*by G***S on February 19, 2026*

Works great

## Frequently Bought Together

- Brightwell Aquatics MicroBacter7 Complete Bioculture for Fish Tank or Aquarium - Populates Biological Filter Media for Saltwater and Freshwater Fish - Aquarium Water Treatments, 135.25 fl oz
- Brightwell Aquatics MicroBacter Clean - Microbial Culture & Enzyme Blend Fish Tank Cleaner - Cleans Live Rock Surfaces for Saltwater Fish Habitats - Aquarium Water Treatments, 135.25 fl oz

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-16*