Seachem Stability – For Freshwater and Marine Aquariums 250ml
$8.39
Price: $8.39
(as of Mar 19, 2025 05:15:46 UTC – Details)
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. Stability® is the culmination of nearly a decade of research and development and represents the current state of the art in natural biological management. The bacteria used in competing products are inherently unstable. The conditions necessary for their growth and development fall into a very narrow range of temperatures, pH, organic loads, etc. When any of these parameters are not strictly within the proper range, the bacterial culture quickly crashes and dies. Stability® is not limited this way. The necessary conditions for the growth of Stability’s™ bacteria strains encompass a very broad range. When other bacteria begin to die off (usually from high organic loads caused by the undetected death of an organism), Stability™ simply becomes more effective.
Is Discontinued By Manufacturer : No
Product Dimensions : 6.1 x 1.8 x 1.2 inches; 8 ounces
Manufacturer recommended age : 1 month and up
Item model number : 126
Department : Unisex-Adult
Date First Available : October 2, 2001
Manufacturer : Seachem Laboratories, Inc.
ASIN : B0002APIJG
Country of Origin : USA
TANK STABILIZATION: Seachem 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”.
TREATMENT: 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.
BACTERIA GROWTH: The necessary conditions for the growth of Stability’s bacterial strains encompass a very broad range. When other bacteria begin to die off (usually from high organic loads caused by the unknown death of an organism), Stability simply becomes more effective.
USE: Shake Seachem Stability well before use and turn off UV/ozone filter. Use 1 capful (5 mL) for each 40 L (10 US gallons) on the first day with a new aquarium. Then use 1 capful for each 80 L (20 US gallons) daily for 7 days. Fish and other aquatic species may be introduced at any time as long as the dosage is maintained for 7 days.
SAFE: 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.
Customers say
Customers find the product effective in maintaining fish health and preventing fish loss. They say it works well for starting new aquariums and helping stabilize water quickly. Many are satisfied with the level of bacteria, stability, and quality of the product. However, some have mixed opinions on ammonia levels and value for money.
AI-generated from the text of customer reviews
Jason –
Seachem Stability: A Game-Changer for My Aquarium!
Seachem Stability has been a game-changer for my aquarium! I was struggling with an unstable nitrogen cycle in my freshwater tank, but since I started using Stability, my fish have been happier and healthier than ever.
The formula contains a blend of aerobic, anaerobic, and facultative bacteria that help to establish and maintain a stable biofilter in both freshwater and marine aquariums. I’ve noticed a significant reduction in ammonia and nitrite levels in my tank, which has led to clearer water and fewer water changes.
One of the things I love most about Stability is that it’s safe and effective for all fish and plants. I have a variety of fish in my tank, including some delicate species, and they’ve all been thriving since I started using this product.
I also appreciate that Seachem Stability is easy to use. You simply add it to your aquarium water daily for a week, then once a week thereafter to maintain a healthy biofilter.
Other Amazon reviewers have also had positive experiences with Seachem Stability. Many have praised its ability to quickly stabilize the nitrogen cycle in their tanks, and its effectiveness in preventing fish loss due to ammonia and nitrite poisoning. Some have even noted an improvement in the growth and coloration of their plants.
Overall, I highly recommend Seachem Stability for anyone struggling with an unstable nitrogen cycle in their aquarium. It’s a safe, effective, and easy-to-use product that has made a big difference in the health and happiness of my fish.
Don Gray –
Starts your new tank with the bacteria needed…
If you are a fishkeeper of any time youve likely learned the nitrogen cycle. The health of your fish and plants depend upon it. Please research the niteogen cycle before you attempt to keep aquariums if tou want your fish to remain as healthy as possible.
You need certain types of bacteria growth to convert harmful chemical wastes created by your fish and feedings. Till your filters and surfaces in your tank develop those bacteria colonies, you cant keep many fish as their own waste is poisonous to them and others. In a new tank without this bacteria, it can take several weeks to develop well enough to fully stock your tank without your fish dying.
Stability is loaded with the types of beneficial bacteria your filters and surfaces need to season your tank and begin adding fish. With doses of stability in your filter medium and water, you dont have to wait weeks for the water to grow these bacteria. The stability product kick starts new tanks or refreshes older ones that may have had the bacteria depleted by medications or overcleaning.
Stability doesnt improve how many of given sizes and types of fish you can keep. You still need to stick to not overstocking your tank. However, youll be able to get started quicker with Stability. The bottles Ive got from Amazon havent set around warehouses for months as they sometimesvhave at pet shops. Only buy what youll use within a month or so to be sure the bacteria you receive are alive and well. Dont heavily overdose the recomendations.
Ive used Stability on my tanks for years to start new ones up and to help refresh bacteria colonies in tanks I jad medicated or completely cleaned out. Its always worked for me to add several fish within a day or two of tank setup.
Perhaps a bit expensive but works great.
Bluffnix –
A Big Help
While not a must have for an aquarium, it helps cycle a tank much faster than usual. Just follow the directions and place the recommended quantity of product in your tank, and it will help beneficial bacteria grow much quicker than it would without it. Highly recommend for anyone starting a new tank.
Kodee –
I cycled in 19 days. I love Seachem. I wont use anything else for my aquarium.
I’m new to the hobby. I had recused a betta with fin rot from Petco. He lived in a 1/2 gallon hospital tank while I proceeded to research everything there was to know about aquariums. I also had time to Amazon Prime his entire aquarium. Thanks to Seachem, my extensive research (the nitrogen cycle is an important thing to study), and Amazon Prime…I now have a fully cycled super healthy aquarium! This stuff worked great.
I have a betta. They have a small bioload. So it took longer to establish my cycle….19 days. If I would of had time I would of done an ammonia fishless cycle prior to purchasing the fish. But I rescued him. And I didn’t have that option. Thanks to Seachem Prime he was 100% safe throughout the entire cycle.
Just follow the directions. Use Seachem Prime every 48 hours. And test your water to monitor your progress! Honestly it was a ton of fun for me to watch my progress. I fell in love with the hobby more and more every single day. I’m so glad I found this hobby!
I have the Fluval Spec 5 Gallon. And I did over dose the Stability by a few milliliters during the first week. Warning: This worked but also caused a major biofilm. It freaked me out. You will cloud a little bit at first. And develop a biofilm. You probably wont develop as sever of a biofilm if you have good surface movement. Since I have a betta, who prefers calm waters, I had to baffle the outflow nozzle to slow it down. This slowed surface movement combined with the extra dosage of Stability created the biofilm. However, as soon as your filter starts growing bacteria that film starts just disappearing on its own. Took about a week to fully clear. It was about 10 days before the water really cleared up and the film was gone.
My cycle took 19 days. Betta’s have a small bioload. This was a major contributor to the extended duration of my cycle….if I had a higher bioload it wouldn’t of taken 19 days. If I had done a fishless cycle with ammonia it would of been super quick.
About 12 days into the cycle I added a mystery snail. They have huge bioloads compared to bettas. So of course I dosed stability for 3 days. To grow additional bacteria in my biofilter. This also extended my cycle.
Everything happened just as I expected it to. And I am a newbie. 100% newbie.
Now that I am cycled I will continue to add the recommended dose during weekly water changes. I donât think this would be necessary if you maintain the health of the aquarium. But it wonât hurt and is a good idea. I will also add this for a few days if I add any new inhabitants to compensate quicker for the increased bioload.
Seachem is an amazing company. Their products are the clear favorite among hobbyists. And their customer service is amazing!!! Just head over to their site and send them an email. Or sign up for their forums. Or just go to google and search…chances are there is a fish forum somewhere with a user asking about the same thing you’re wanting to know.
This product is in spore form. It does not need refrigeration. Nor do you have to worry about high temps during shipping. Obviously you don’t want it to be subjected to the elements more than it needs to be. But I know some brands are notorious for ‘going bad’ in the shipping process.
RESEARCH! Buy this. And have a great time with your aquarium!! This is a great product. Just do not forget to test your water. Most use the API Master kits.
Frank –
Yo lo uso en caso de imprevisto (cuando se va la luz por más 20 minutos, después de cambios de agua).
Rodrigo Vasconcelos –
Produto excelente para estabilizar os parâmetros da agua do aquário.
Berto –
Un magnÃfico producto que se puede decir de seachen.siempre con productos de primera calidad.
gary lees –
i can’t atest as to whether it will fully cycle a new tank, but, i can however recomend it for bacterial die off in older tanks with lazy owners like me who forget to hoover their gravel or clean their filters often, as long as you follow the instructions to the letter it will have an old tank back to fully cycled by the end of a week, i recomend the 500ml bottle rather than the 250ml its only a few pounds more but it will last you up to 4 years and its useful when you add new fish.
OmG –
Cycle tank quickly, I always used this and got good result from it.