Seachem Stability 325ml
325ml
Product Overview
Stability® will rapidly and safely establish the aquarium biofilter 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, nitrite, 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 over use.
Key Features
- Establishes a stable biological filter in new aquariums
- Contains aerobic, anaerobic, and facultative bacteria
- Breaks down ammonia, nitrite, and nitrate
- Non-sulfur fixing bacteria – no hydrogen sulfide production
- Safe for fish, invertebrates, and aquatic plants
| Specification | Value |
|---|---|
| Volume | 325ml |
| Form | Liquid |
| Application | Freshwater and marine aquariums |
| Function | Establishes biofilter, reduces ammonia and nitrite |
FAQ
How long does it take for Stability® to establish a biofilter?
The time required for Stability® to establish a biofilter varies depending on tank conditions and water parameters. Typically, visible improvement in water quality can be observed within 1 to 3 weeks after adding the product.
Can Stability® be used in both freshwater and marine aquariums?
Yes, Stability® is formulated for use in both freshwater and marine aquarium systems.
Does Stability® produce hydrogen sulfide?
No, the bacteria in Stability® are non-sulfur fixing and will not produce toxic hydrogen sulfide.

Emily Morgan –
I used Stability® when setting up my new freshwater tank. The water clarity improved within a week, and my fish showed no signs of stress. It’s easy to use and works well with my established filter system.
Angela Burgess –
Great product for new tank setups. I added it during the initial water change and noticed a significant drop in ammonia levels after a few days. My tank has been stable since then.
Nicola Mathis –
My marine tank was struggling with high nitrite levels. After using Stability®, the parameters stabilized within a week. No fish deaths or health issues reported.
Abigail Hart –
Works as expected. I used it in a 55-gallon freshwater tank. The bacteria established quickly and helped maintain stable water chemistry over time.
Adam Hamilton –
Highly recommended for new aquariums. It’s simple, effective, and safe. My fish have been thriving since I added it to the system.