---
product_id: 12652108
title: "Stability Fish Tank Stabilizer - For Freshwater and Marine Aquariums 2L / 67.6 oz"
brand: "seachem"
price: "€ 118.96"
currency: EUR
in_stock: true
reviews_count: 13
category: "Seachem"
url: https://www.desertcart.sk/products/12652108-stability-fish-tank-stabilizer-for-freshwater-and-marine-aquariums-2l
store_origin: SK
region: Slovakia
---

# Rapid biofilter activation Safe for freshwater & marine Synergistic bacterial blend Stability Fish Tank Stabilizer - For Freshwater and Marine Aquariums 2L / 67.6 oz

**Brand:** seachem
**Price:** € 118.96
**Availability:** ✅ In Stock

## Summary

> ⚡ Turn your tank into a thriving aquatic ecosystem—fast, safe, and foolproof!

## Quick Answers

- **What is this?** Stability Fish Tank Stabilizer - For Freshwater and Marine Aquariums 2L / 67.6 oz by seachem
- **How much does it cost?** € 118.96 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/12652108-stability-fish-tank-stabilizer-for-freshwater-and-marine-aquariums-2l)

## Best For

- seachem enthusiasts

## Why This Product

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

## Key Features

- • **Zero Toxic Byproducts:** Non-sulfur fixing bacteria ensure no harmful hydrogen sulfide
- • **Universal Compatibility:** Perfectly safe for all aquatic life and plants, no risk of overdose
- • **Effortless Maintenance Boost:** Use monthly or with water changes to keep your tank thriving
- • **Cutting-Edge Bacterial Formula:** Aerobic, anaerobic & facultative bacteria for total waste breakdown
- • **Fast-Track Your Aquarium’s Health:** Establishes biofilter in days to prevent new tank syndrome

## Overview

Seachem Stability is a scientifically advanced 2L aquarium stabilizer designed to rapidly establish a healthy biofilter in both freshwater and marine tanks. Its unique blend of aerobic, anaerobic, and facultative bacteria safely breaks down toxic ammonia and nitrates without producing harmful byproducts, preventing new tank syndrome—the leading cause of fish loss. Completely safe for all aquatic organisms and plants, Stability supports ongoing tank health with easy dosing for new setups and routine maintenance.

## Description

Stability will rapidly and safely establish the aquarium bio filter in freshwater and marine systems, thereby preventing the #1 cause of fish death: new tank syndrome. Stability is formulated specifically for the aquarium and contains a synergistic blend of aerobic, anaerobic, and facultative bacteria which facilitate the breakdown of waste organics, ammonia, and nitrate. The bacteria employed by Stability are non-sulfur fixing and will not produce toxic hydrogen sulfide. Stability is completely harmless to all aquatic organisms as well as aquatic plants, thus there is no danger of overuse. Stability is the culmination of nearly a decade of research and development and represents the current state of the art in natural biological management. New Tank Stabilization System Rapid & Safe Establishment of Bio-Filter Prevent New Tank Syndrome Freshwater & Marine

Review: Stability: A Biofilter Essential - Seachem Stability is a great product, very simple as it is that great nitrifying bacteria that turns fish waste or food from Ammonia to Nitrites and to Nitrates. Ammonia and Nitrites are severely toxic to fish so establishing a tank with this or seeding it with an already established sponge filter is essential to avoid "new tank syndrome" I have been using Seachem products and stability for months but stability and their prime has been staples for every water change to avoid a cycle crash among my API freshwater liquid master test kit. None of their products mess with water clarity, you will see a slight distortion as they settle into the water collumn, although this disperses rather quickly. I highly recommend.
Review: Easy to Use and Works as Intended - This stabilizer has been simple to use and fits smoothly into regular aquarium maintenance. Dosing is clear, and it integrates well when setting up or maintaining a tank. It’s performed consistently with no issues and does exactly what it’s designed to do. The bottle size is practical and should last through multiple uses. Straightforward, reliable, and effective.

## Features

- Rapidly And Safely Establishes The Aquarium Bio filter In Freshwater And Marine Systems
- Prevents New Tank Syndrome, The Number One Cause Of Fish Death
- Contains a synergistic blend of aerobic anaerobic and facultative bacteria which facilitate the breakdown of waste organics
- The Bacteria Employed By Stability Are Consulter Fixing And Will Not Produce Toxic Hydrogen Sulfide
- Completely Harmless To All Aquatic Organisms As Well As Aquatic Plants Thus There Is No Danger Of Overuse

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0006JLVR6 |
| ASIN  | B0006JLVR6 |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #1,774 in Pet Supplies ( See Top 100 in Pet Supplies ) #53 in Aquarium Cleaners |
| Brand Name | Seachem |
| Color | Clear |
| Customer Reviews | 4.8 4.8 out of 5 stars (12,955) |
| Date First Available | June 15, 2004 |
| Date First Available  | June 15, 2004 |
| Department | Unisex-Adult |
| Department  | Unisex-Adult |
| Directions | Use 1 capful (5 mL) for each 40 L (10 gallons*) on the first day with a new aquarium. Then use 1 capful for each 80 L (20 gallons*) daily for 7 days. Fish and other aquatic species may be introduced at any time as long as dosage is maintained for 7 days. For optimum biofilter performance use 1 capful for each 40 L (10 gallons*) once a month or with each water change and whenever introducing new fi… |
| Included Components | Seachem Stability Fish Tank Stabilizer - For Freshwater and Marine Aquariums 2L / 67.6 oz |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 9.8 x 4.6 x 4.6 inches |
| Item Package Dimensions L x W x H | 9.77 x 4.72 x 4.67 inches |
| Item Weight | 1.18 Kilograms |
| Item model number | 001064 |
| Item model number  | 001064 |
| Manufacturer | Seachem Laboratories, Inc. |
| Manufacturer  | Seachem Laboratories, Inc. |
| Material | Plastic |
| Model Name | Seachem Stability Fish Tank Stabilizer - For Freshwater and Marine Aquariums 2L / 67.6 oz |
| Number of Items | 1 |
| Product Dimensions  | 9.8 x 4.6 x 4.6 inches; 2.6 Pounds |
| Size | 2 l / 67.6 fl oz |
| Specific Uses for Product | Improving Aquarium Conditions |
| Style | Stabilizer |
| Target Audience Keyword | fish |
| Warranty Description | Warranty |

## Product Details

- **Brand:** Seachem
- **Item Form:** Liquid
- **Item Weight:** 1.18 Kilograms
- **Liquid Volume:** 2 Milliliters
- **Manufacturer:** Seachem Laboratories, Inc.

## Images

![Stability Fish Tank Stabilizer - For Freshwater and Marine Aquariums 2L / 67.6 oz - Image 1](https://m.media-amazon.com/images/I/71ceFfi3xhL.jpg)

## Questions & Answers

**Q: Does this product help with algee problems in a new tank?  Does it cause algee?**
A: no. use for new tank syndrome with prime and ph conditioner.  also with every water change.

**Q: Can i keep in refrigerator eventhough not required?  Thanks!**
A: Its not needed. The bacteria will live even outside the fridge.

**Q: Is this really the 2L bottle? The picture is not correct.**
A: Don’t let the picture fool you. The 2liter bottle looks different but still the same product.

**Q: How long must uv light be shut off when adding this product ?**
A: This is what I got directly from their website. 
A: The UV and/or ozone should be kept off for the 7 days you are dosing if you are cycling or for at least 24 hours if it is for Stability™ additions of new fish or water changes. The reason both should be turned off is because UV and ozone break down and kill bacteria.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Stability: A Biofilter Essential
*by Z***H on November 20, 2025*

Seachem Stability is a great product, very simple as it is that great nitrifying bacteria that turns fish waste or food from Ammonia to Nitrites and to Nitrates. Ammonia and Nitrites are severely toxic to fish so establishing a tank with this or seeding it with an already established sponge filter is essential to avoid "new tank syndrome" I have been using Seachem products and stability for months but stability and their prime has been staples for every water change to avoid a cycle crash among my API freshwater liquid master test kit. None of their products mess with water clarity, you will see a slight distortion as they settle into the water collumn, although this disperses rather quickly. I highly recommend.

### ⭐⭐⭐⭐⭐ Easy to Use and Works as Intended
*by K***T on January 11, 2026*

This stabilizer has been simple to use and fits smoothly into regular aquarium maintenance. Dosing is clear, and it integrates well when setting up or maintaining a tank. It’s performed consistently with no issues and does exactly what it’s designed to do. The bottle size is practical and should last through multiple uses. Straightforward, reliable, and effective.

### ⭐⭐⭐⭐⭐ Excellent product
*by J***B on November 11, 2025*

Works great! I was having issues with the nitrite being converted to nitrates because of lack of proper bacteria. I followed the 7 day dosage cycle and this completely turned the tank around. It’s stable and fully cycled now.

## Frequently Bought Together

- Seachem Stability Fish Tank Stabilizer - For Freshwater and Marine Aquariums 2L / 67.6 oz
- Seachem Prime Water Conditioner, 2 Liter
- Seachem StressGuard Slime Coat Protection - Stress and Toxic Ammonia Reducer 500 ml

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-26*