---
product_id: 48226688
title: "Fluval Cycle Water Treatment, 500 ml"
brand: "fluval"
price: "$212927"
currency: COP
in_stock: true
reviews_count: 13
category: "Fluval"
url: https://www.desertcart.co/products/48226688-fluval-cycle-water-treatment-500-ml
store_origin: CO
region: Colombia
---

# Rapid ammonia & nitrite neutralization Safe for fresh & saltwater tanks Immediate fish introduction support Fluval Cycle Water Treatment, 500 ml

**Brand:** fluval
**Price:** $212927
**Availability:** ✅ In Stock

## Summary

> 🐠 Dive into a safer, healthier aquarium experience instantly!

## Quick Answers

- **What is this?** Fluval Cycle Water Treatment, 500 ml by fluval
- **How much does it cost?** $212927 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/48226688-fluval-cycle-water-treatment-500-ml)

## Best For

- fluval enthusiasts

## Why This Product

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

## Key Features

- • **Prevents Fish Loss:** Keep your fish thriving with proven water treatment.
- • **Universal Fresh & Saltwater Use:** One solution for all your aquatic ecosystems.
- • **Powerful Ammonia & Nitrite Control:** Eliminate toxic buildup fast to protect your aquatic friends.
- • **Instantly Safe Aquarium Environment:** Kickstart your tank’s biological balance from day one.
- • **Ready for Immediate Fish Introduction:** No waiting, just add fish and enjoy your vibrant tank.

## Overview

Fluval is a 500ml liquid aquarium water treatment designed to rapidly establish a safe biological environment by eliminating harmful ammonia and nitrites. Suitable for both fresh and saltwater tanks, it prevents fish loss and allows immediate introduction of fish, ensuring a thriving aquatic habitat from the start.

## Description

Free delivery and returns on eligible orders. Buy Fluval Cycle Water Treatment, 500 ml at desertcart UK.

Review: Maintain a healthy Aquarium - I use this product when setting up a new aquarium (as part of the nitrogen cycle to promote healthy ammonia eating bacteria growth, a 6 to 8 week process) and as part of my weekly water changes. I feel that this product works very well, as my fish are all happy and healthy and I have never experienced any bad water quality issues (ammonia spikes etc). I use this weekly to add to my 200ltr, 60ltr and 30ltr aquariums when I do a water change. I change 20% - 30% of the water volume and add an appropriate dose of this stuff, however it's not really possible to overdose so it does not really matter if you add a little bit extra. I usually do add a bit more than stated on the label. I keep it stored at room temperature and the 2ltr bottle usually lasts me about 6 weeks. There is always a seal covering the opening after the lid has been unscrewed, so you know it is brand new and has not been opened / tampered with. This is safe for my fresh water aquarium inhabitants, of which I have many varieties. Pros: - The larger 2ltr bottle is excellent value compared to the 250ml or 500ml bottles - Quick delivery / repeat orders available - Far cheaper than my local pet store Cons: - Nothing I can think of really I hope this review has been helpful to you. Happy Fish Keeping!
Review: Good - Seemed to work well tank cycled quicker

## Features

- Immediately establishes safe biological aquarium environment
- Powerful responsive ammonia and nitrite elimination
- Prevents fish loss
- Allows immediate introduction of fish
- For Fresh and Saltwater Use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00G25IAN6 |
| Batteries Included | No |
| Batteries required | No |
| Best Sellers Rank | 1,430 in Pet Supplies ( See Top 100 in Pet Supplies ) 13 in Aquarium Water Treatments |
| Colour | Blue |
| Customer Reviews | 4.6 4.6 out of 5 stars (6,495) |
| Date First Available | 6 Jan. 2014 |
| Item Form | Liquid |
| Item Weight | 520 g |
| Item model number | A8351A1 |
| Number of Items | 1 |
| Pet Type | Fish |
| Product Dimensions | 7.62 x 7.62 x 16.51 cm; 520 g |
| Quantity | 1 |
| Size | 500 ml |
| Volume | 500 Millilitres |

## Product Details

- **Brand:** Fluval
- **Item form:** Liquid
- **Item weight:** 0.52 Kilograms
- **Liquid volume:** 16.9 Fluid Ounces
- **Manufacturer:** Rolf C Hagen UK Ltd

## Images

![Fluval Cycle Water Treatment, 500 ml - Image 1](https://m.media-amazon.com/images/I/71qzj+FGElL.jpg)
![Fluval Cycle Water Treatment, 500 ml - Image 2](https://m.media-amazon.com/images/I/81+iaCLv3AL.jpg)
![Fluval Cycle Water Treatment, 500 ml - Image 3](https://m.media-amazon.com/images/I/81bu7i2MiwL.jpg)
![Fluval Cycle Water Treatment, 500 ml - Image 4](https://m.media-amazon.com/images/I/91-Evy96NLL.jpg)
![Fluval Cycle Water Treatment, 500 ml - Image 5](https://m.media-amazon.com/images/I/91lZke+rb-L.jpg)

## Questions & Answers

**Q: i have a 240l tank how much cycle do i use in my tank it is a new tank.**
A: Tip the whole bottle in your filter

**Q: Can this be used to boost some established bio media in a new tank?**
A: Yes definately. Put it in the tank as instructions say. Then keep putting a min og 10 ml in until your happy. I used it for setting up new 200 ltr tank and it's the only stuff I used after that.

**Q: Can I use this in salt water?**
A: Having read the information on the back of the bottle it says that it is safe for use in fresh and salt water aquariums.

**Q: I want to add new fish into my established tank. Can I add this into the tank, let the bag with new fish float for a while then release the fish?**
A: No! What you must do is add this after following the instructions and leave for a few days for the bacteria to establish a proper environment for the fish before they are added. Try reading a book or 3 on setting up a fish tank.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Maintain a healthy Aquarium
*by M***D on 3 April 2021*

I use this product when setting up a new aquarium (as part of the nitrogen cycle to promote healthy ammonia eating bacteria growth, a 6 to 8 week process) and as part of my weekly water changes. I feel that this product works very well, as my fish are all happy and healthy and I have never experienced any bad water quality issues (ammonia spikes etc). I use this weekly to add to my 200ltr, 60ltr and 30ltr aquariums when I do a water change. I change 20% - 30% of the water volume and add an appropriate dose of this stuff, however it's not really possible to overdose so it does not really matter if you add a little bit extra. I usually do add a bit more than stated on the label. I keep it stored at room temperature and the 2ltr bottle usually lasts me about 6 weeks. There is always a seal covering the opening after the lid has been unscrewed, so you know it is brand new and has not been opened / tampered with. This is safe for my fresh water aquarium inhabitants, of which I have many varieties. Pros: - The larger 2ltr bottle is excellent value compared to the 250ml or 500ml bottles - Quick delivery / repeat orders available - Far cheaper than my local pet store Cons: - Nothing I can think of really I hope this review has been helpful to you. Happy Fish Keeping!

### ⭐⭐⭐⭐⭐ Good
*by A***N on 20 June 2025*

Seemed to work well tank cycled quicker

### ⭐⭐⭐⭐⭐ Used for years.great product.
*by J***N on 19 November 2025*

Does what it says.

## Frequently Bought Together

- Fluval Cycle Biological Enhancer, Aquarium Water Treatment, 16.9 Oz., A8351
- Fluval Waste Control Biological Cleaner, Aquarium Water Treatment, 8.4 Oz., A8355
- Fluval AquaPlus Water Conditioner, Aquarium Water Treatment, 16.9 Oz., A8344

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-01-26*