





🐠 Keep your tank thriving—stability you can trust, from day one!
Seachem Stability is a scientifically formulated liquid bacterial supplement designed to rapidly establish and maintain a healthy biofilter in both freshwater and marine aquariums. By introducing a powerful blend of bacteria, it prevents toxic ammonia and nitrite spikes, effectively eliminating new tank syndrome. Easy to dose and compatible with all fish species, this 16.9 fl oz stabilizer ensures a safe, balanced aquatic environment from setup through ongoing maintenance.




| ASIN | B0002APIIW |
| ASIN | B0002APIIW |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #2,569 in Pet Supplies ( See Top 100 in Pet Supplies ) #12 in Aquarium Water Treatments |
| Brand Name | Seachem |
| Color | Clear |
| Country of Origin | United States |
| Customer Reviews | 4.8 4.8 out of 5 stars (13,009) |
| Date First Available | June 20, 2004 |
| Date First Available | June 20, 2004 |
| Directions | See Packaging |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 7.6 x 2 x 1.5 inches |
| Item Package Dimensions L x W x H | 7.48 x 2.36 x 2.28 inches |
| Item Weight | 1.1 Pounds |
| Item model number | 123 |
| Item model number | 123 |
| Manufacturer | Seachem Laboratories, Inc. |
| Manufacturer | Seachem Laboratories, Inc. |
| Material | Liquid |
| Model Name | Seachem Stability Fish Tank Stabilizer |
| Number of Items | 1 |
| Product Dimensions | 7.6 x 2 x 1.5 inches; 1.09 Pounds |
| Size | 500 ml / 16.9 fl oz |
| Specific Uses for Product | Indoor |
| Style | Tank Stabilizer |
| Target Audience Keyword | all fish, fish |
Z**H
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.
K**T
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.
J**B
Excellent product
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.
T**M
Great product that really improves water chemistry and clarity
I originally started ordering this Seachem product to stabilize my fresh water chemistry in which it does wonderfully. However, no Im hooked on it as it makes my water so clear. I added this product to my subscription list. Highly recommended. 55 gallon tank with many community fish that got much larger than i expected.
J**.
Stability
Excellent product fast shipping
J**M
Better at colonizing and withstanding medication, but not efficient nitrifiers...
I'll admit, it's very shelf-stable. However, these heterotrophic bacteria cause more harm than good. You need a very good filtration system to avoid bacterial blooms from asphyxiating your fish. Also, this causes ammonia spikes for days because of all the organic matter it breaks down. Not really safe, unless you want a semi-clean aquarium with fish poop still on substrate. The bacteria that colonize the aquarium can only process so much. I'd say about 0.10 ppm ammonia per day. I've had more efficient success with other products. However, if one is looking for a Nitrification emergency, then you can dose a ton of Stability for that. Your mileage may vary. And if you plan on cycling huge Aquariums then good luck on waiting several weeks. Edit: after trying several products, I decided to bump this to from 3 to 4 stars. It does colonize on filter media better than true autotrophic nitrfiers, and withstand medications better. However, Stability sometimes takes forver on some tanks. Seachem doesn't state why and if it's pH, kH, and/or oxygen related (dissolved oxygen). In my experience, Stability is good for colonizing your filter bed. But you have to dose other products to really get Ammonia levels down. And, I believe this will always be this way, unless you have a sump that is 5 times bigger than your tank. If you think about it: lakes, rivers, and the ocean has more surface area for bacteria to efficiently filter almost all the Ammonia. I guess we'll have to wait until someone invents a synthetic strain that does the job better than natural nitrifiers as aquariums are very far from being a natural environment for our fish.
A**R
Great!
This stuff works great! I can see why it is recommended for axolotl tanks!
A**.
Good
Good for new tanks, has a smell, good value for the why you get.
V**D
Goede service. Na 2 dagen binnen zoals vermeld.
V**V
I think my fish love it
L**V
Awesome seller and item. Will buy shain
Ü**N
gerçekten 1 hafta kullandım. akvaryum suyunu temizledi. neredeyse akvaryumu bozacaktım. pis bulanık su yüzünden. şu an bu vd metalin mavisi kullanarak su temizliğini sağladım.
J**E
Produto de excelente qualidade!!!!
Trustpilot
3 days ago
2 months ago