---
product_id: 209775038
title: "MicroBacter Start XLF - Concentrated Freshwater Nitrifying Bacteria - Quick Start Fish Tank Starter, Lift Microbe Levels & Water Filtering - Aquarium Water Treatments, 16.9 fl oz"
brand: "brightwell aquatics"
price: "197.48 DT"
currency: TND
in_stock: true
url: https://www.desertcart.tn/products/209775038-microbacter-start-xlf-concentrated-freshwater-nitrifying-bacteria-quick-start-fish
store_origin: TN
region: Tunisia
---

# 5-7 Days Cycling 15x Concentrated American-Made MicroBacter Start XLF - Concentrated Freshwater Nitrifying Bacteria - Quick Start Fish Tank Starter, Lift Microbe Levels & Water Filtering - Aquarium Water Treatments, 16.9 fl oz

**Brand:** brightwell aquatics
**Price:** 197.48 DT
**Availability:** ✅ In Stock

## Summary

> 🌊 Dive into a thriving aquarium experience!

## 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, 16.9 fl oz by brightwell aquatics
- **How much does it cost?** 197.48 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/209775038-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

- • **Quality You Can Trust:** Proudly made in the USA with scientifically backed innovation.
- • **Rapid Cycling Solution:** Achieve a thriving ecosystem in just 5-7 days!
- • **Kickstart Your Aquarium:** Transform your tank with a powerful 15x concentrated blend!
- • **Advanced Recovery Formula:** Re-establish beneficial bacteria post-cleaning or medication.
- • **Perfect for High-Density Tanks:** Effectively manage ammonia and nitrite levels in crowded environments.

## Overview

Brightwell Aquatics MicroBacter Start XLF is a concentrated freshwater nitrifying bacteria solution designed to enhance biological filtration in aquariums. This fast-acting formula promotes rapid water cycling, making it ideal for both new and existing tanks. It effectively reduces harmful ammonia and nitrite levels, supports high-density populations, and is compatible with various substrates. Proudly made in the USA, it ensures quality and longevity for your aquatic ecosystem.

## Description

Brightwell Aquatics MicroBacter Start XLF Experience a new level of aquarium care with Brightwell Aquatics MicroBacter Start XLF – the ultimate solution for achieving a balanced and thriving aquatic environment. Our concentrated formula is designed to boost the nitrogen cycle in your aquarium, ensuring the rapid establishment of biological filtration and creating a stable habitat for your aquatic companions. It’s particularly useful for new startups, resulting in tank cycling in 5 to 7 days in most cases. This shrimp safe advanced blend works effectively to break down organic waste, keeping your aquarium water pristine. It is meticulously formulated to enhance water quality and eliminate ammonia and nitrite spikes. Whether you're setting up a new tank or maintaining an established one, MicroBacter Start XLF is your go-to solution. Its versatility extends to fish and invertebrate freshwater aquariums and is particularly effective for live planted aquariums, providing powerful support for a diverse range of aquatic environments. FEATURES AT A GLANCE Super concentrated 15x strength formula Useful for rapidly re-establishing nitrification bacteria in case of an emergency Usually cycles in 5-7 days Ideal in aquaria with high population densities and when adding new fish Best used post-cleaning of rocks and surfaces or after use of medication Prevents “New Tank Syndrome” Supplied in a proprietary base for maximum longevity Formulated utilizing extensive data compiled by microbiologists 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.

## 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:** 500 Milliliters
- **Item Weight:** 1.2 Pounds
- **Item Form:** Liquid
- **Manufacturer:** Brightwell Aquatics

## Images

![MicroBacter Start XLF - Concentrated Freshwater Nitrifying Bacteria - Quick Start Fish Tank Starter, Lift Microbe Levels & Water Filtering - Aquarium Water Treatments, 16.9 fl oz - Image 1](https://m.media-amazon.com/images/I/71BHceVYGtL.jpg)

## Available Options

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

## Frequently Bought Together

- Brightwell Aquatics MicroBacter Start XLF - Concentrated Freshwater Nitrifying Bacteria - Quick Start Fish Tank Starter, Lift Microbe Levels & Water Filtering - Aquarium Water Treatments, 16.9 fl oz
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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-02-03*