---
product_id: 201862763
title: "MicroBacter Start XLF - Concentrated Freshwater Nitrifying Bacteria - Quick Start Fish Tank Starter, Lift Microbe Levels & Water Filtering - Aquarium Water Treatments, 8.45 fl oz"
brand: "brightwell aquatics"
price: "₩48069"
currency: KRW
in_stock: true
reviews_count: 8
url: https://www.desertcart.kr/products/201862763-microbacter-start-xlf-concentrated-freshwater-nitrifying-bacteria-quick-start-fish
store_origin: KR
region: South Korea
---

# 15x concentrated power supports high-density tanks 5-7 day rapid cycling MicroBacter Start XLF - Concentrated Freshwater Nitrifying Bacteria - Quick Start Fish Tank Starter, Lift Microbe Levels & Water Filtering - Aquarium Water Treatments, 8.45 fl oz

**Brand:** brightwell aquatics
**Price:** ₩48069
**Availability:** ✅ In Stock

## Summary

> ⚡ Rapidly revive your aquarium’s ecosystem and never miss a moment of aquatic brilliance!

## Quick Answers

- **What is this?** MicroBacter Start XLF - Concentrated Freshwater Nitrifying Bacteria - Quick Start Fish Tank Starter, Lift Microbe Levels & Water Filtering - Aquarium Water Treatments, 8.45 fl oz by brightwell aquatics
- **How much does it cost?** ₩48069 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/201862763-microbacter-start-xlf-concentrated-freshwater-nitrifying-bacteria-quick-start-fish)

## 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

- • **Crowd-Ready Formula:** Scientifically designed to reduce ammonia and nitrite in densely populated freshwater tanks.
- • **Proudly American-Made:** Crafted in the USA with microbiologist-backed innovation for superior aquarium health.
- • **Turbocharge Your Tank:** Super concentrated 15x formula accelerates biological filtration for a thriving aquatic ecosystem.
- • **Fast-Track Water Balance:** Achieve stable nitrification in just 5-7 days—perfect when time is of the essence.
- • **Post-Cleaning Recovery Boost:** Speeds up bacteria re-establishment after tank maintenance or medication use, ensuring fish vitality.

## Overview

Brightwell Aquatics MicroBacter Start XLF is a 15x concentrated nitrifying bacteria blend that jumpstarts biological filtration in freshwater aquariums. It accelerates tank cycling within 5-7 days, reduces harmful ammonia and nitrite levels, and supports high-density fish populations. Safe for shrimp and effective post-cleaning or medication, this American-made formula ensures a stable, vibrant aquatic environment with over a year shelf life.

## Description

Brightwell Aquatics MicroBacter Start XLF - Concentrated Freshwater Nitrifying Bacteria - Quick Start Fish Tank Starter, Lift Microbe Levels & Water Filtering - Aquarium Water Treatments, 8.45 fl oz

## Features

- HIGH-POWER TANK STARTER – MicroBacter Start XLF is a powerful 15x concentrated blend designed to kickstart biological filtration in new tanks and existing freshwater aquariums. It enhances water quality, providing a flourishing underwater environment with live, non-pathogenic microbes
- RAPID WATER CYCLING – Optimize your aquarium’s health swiftly with this shrimp safe fast-acting solution. Quickly accelerate the tank's beneficial nitrifying bacteria population for balance and stability in just 5-7 days. It’s the ideal solution when time is crucial
- FOR HIGH-DENSITY AQUARIUMS – A scientifically blended formula that caters to crowded tanks and effectively reduces ammonia and nitrite levels, all while supporting population density. Supplied in a proprietary base, providing maximum longevity in shipping and in your aquatic ecosystem. It has a shelf life of over a year at room temperature.
- ADVANCED TANK RECOVERY – Perfect for all levels of aquarium enthusiasts and compatible with various sand and rock substrates. Best used post-cleaning or after use of medications. This ammonia remover accelerates the re-establishment rate of fish tank bacteria, ensuring your fish thrive
- 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

## Product Details

- **Brand:** Brightwell Aquatics
- **Liquid Volume:** 250 Milliliters
- **Item Weight:** 9.91 Ounces
- **Item Form:** Liquid
- **Target Species:** Fish

## Images

![MicroBacter Start XLF - Concentrated Freshwater Nitrifying Bacteria - Quick Start Fish Tank Starter, Lift Microbe Levels & Water Filtering - Aquarium Water Treatments, 8.45 fl oz - Image 1](https://m.media-amazon.com/images/I/71TtquGvjEL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Multi-purpose
*by Z***Z on June 27, 2024*

I got it to do two things: Keep the water clear in my pond, and help make liquid fertilizer. If you didn't know, you can put grass clippings and other organic stuff into water, and the water will leach out a lot of the good stuff. Eventually this progresses into a fermentation, and finally, nitrization. That's when bacteria start really turning the nitrogen in the liquid into something plants can use.Well, my liquid fertilizer mixture is still sitting, but not long after I added some of this, the water turned black. This is a good sign and shows that everything's working, and quickly! As for my pond, it looks great and has no problems.I recommend this item to people getting into homesteading, aquaculture, regenerative agriculture, making their own fertilizer, etc.

### ⭐⭐⭐⭐⭐ Worked faster than expected
*by D***E on April 7, 2025*

This product works very well. It quickly cycled my tank. Worked faster than other products I've used in the past. If I ever need to cycle a tank again, I'll be using this product.

### ⭐⭐⭐⭐⭐ Great to boost good bacteria
*by M***M on June 24, 2025*

Just work both, you know, a fish tank and on our quaip, when we had to do a very big water change.

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**Shop now:** [https://www.desertcart.kr/products/201862763-microbacter-start-xlf-concentrated-freshwater-nitrifying-bacteria-quick-start-fish](https://www.desertcart.kr/products/201862763-microbacter-start-xlf-concentrated-freshwater-nitrifying-bacteria-quick-start-fish)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-21*